Diets have changed in China—and so too has its top crop. Since 2011,the country   (1)  （grow）more corn than rice. Corn production has jumped nearly 125 percent over  (2)  past 25 years, while rice has increased only 7 percent.

A taste for meat is  (3)  (actual) behind the change:An important part of its corn is used to feed chickens, pigs, and cattle. Another reason for corn’s rise: The government encourages farmers to grow corn instead of rice

  (4)  (improve) water quality. Corn uses less water  (5)  rice and creates less fertilizer(化肥) runoff. This switch has decreased  (6)  (pollute) in the country’s major lakes and reservoirs and made drinking water safer for people.zxxk

According to the World Bank, China accounts for about 30 percent of total  (7)  (globe)fertilizer consumption. The Chinese Ministry of Agriculture finds that between 2005—when the government  (8)  (start) a soil-testing program  (9)  gives specific fertilizer recommendations to farmers — and 2011, fertilizer use dropped by 7.7 million tons.That prevented the emission(排放) of 51.8 million tons of carbon dioxide.China’s approach to protecting its environment while  (10)  (feed) its citizens ＂offers useful lessons for agriculture and food policymakers worldwide.＂ says the bank’s Juergen Voegele.

With the _  _(1)  __ (improve) of life standards, there are a growing number of people travelling each year, _  _(2)  __ is a good way to enjoy life. Some people would like to take a package tour, _  _(3)  __ others would rather travel on their own. I prefer the latter, because I feel that it's much more convenient and cheaper than taking a package tour as I _  _(4)  __  (do) before. 

First of all, travelling on my own, I can arrange my time and route _  _(5)  __ (free). For example, when I get to someplace I like, I choose to stay longer and don't have to think about others. Secondly, the schedule is relatively tight joining package tours, and tourists can only stay for a very short time in tourist attractions. _  _(7)  __ is difficult to enjoy every landscape carefully. _  _(6)  __ (three), in order to earn money, some travel agencies force tourists _  _(8)  __  (buy) things. In the meantime, travelling on my own is much cheaper. Finally, the trip is designed to relax. However, many people say that package tours are not to make them feel really _  _(9)  __ (relax), but even more tired. 

On the whole, I feel like _  _(10)  __  (travel) on my own, which is more convenient. 

Summer is almost here, and the weather is heating up.   (1)  you drink enough water every day? Many kids don't, according to a new study   (2)   (publish) in the American Journal of Public Health.

Erica Kenney, a   (3)   (science) at Harvard's T. H. Chan School of Public Health, originally planned to look into the amount of sugary drinks that kids were consuming in schools. However,   (4)    she was doing the research, she noticed that many kids were    (5)   (simple) not drinking enough water.

Kenney and her team examined figures from a group of 4,000 children, ages from 6 to 19, between the years of 2009 and 2012. While looking through the survey results, she  (6)   (find) that more than half of the kids were dehydrated (脱水的).

A lack   (7)  water can lead to health problems such as headaches, poor physical performance, and even more serious problems. Your body needs more water when you are in hot climates, when you are physically active, and when you have a fever.

Kenney said,   (8)   is good news that this public health problem has a simple solution. If we can focus on encouraging kids   (9)   (drink) more water — a low cost, no sugary drinks — we can improve their drinking habits, which may allow many kids to feel  (10)   (great) throughout the day and do better in school."

Itˈs a cold day in December. A little boy about 10-year-old was standing in front of a shoe store on Broadway, barefooted, peering through the window, and shivering with cold. A lady approached the boy and said  (1)  (gentle)," My little fellow, why are you looking so earnestly in that window?" "I was asking God to give me a pair of shoes," the boy   (2)  (reply).

The lady took him by the hand, went into the store,  (3)  asked the clerk to get a half dozen pairs of socks for the boy. She then asked  (4)  he could give her a basin of water and a towel. The clerk quickly brought them to her. She took the little fellow to the back part of the store and, removing her gloves, knelt down, washed his little feet, and dried them with the towel. By this time, the clerk   (5)  (return) with the socks.  (6)  (place) a pair upon the boyˈs feet, she then purchased him a pair of shoes, and tying up the remaining pairs of socks, gave them to the boy. She patted him on  (7)  head and said," My little fellow, do you feel  (8)  comfortable now than before?" As she turned to go, the astonished boy,  (9)  caught her hand and looked up in her face,   (10)  tears in his eyes, answered the question with these words," Are you Godˈs wife?"

I'm not sure  (1)  is more frightened， me or the female gorilla（大猩猩）that suddenly appears out of nowhere． I' m walking on a path in the forest in the Central African Republic． Unexpectedly， I'm face﹣to﹣face with the gorilla， who begins screaming at  (2)  top of her lungs． That makes her baby scream， and then a 400﹣pound male appears．He screams the   (3)  （loud ）of all． The noise shakes the trees as the male beats his chest and charges toward me． I quickly lower myself， ducking my head to avoid   (4)  （look）directly into his eyes so he doesn′t feel   (5)  （challenge）．

    My name is Mireya Mayor． I'm a   (6)  （science）who studies animals such as apes and monkeys． I was searching  (7)  these three western lowland gorillas I'd been observing． No one had seen them for hours， and my colleagues and I were worried．

    When the gorillas and I frightened each other， I was just glad to find   (8)  （they）alive．True to gorilla′s unaggressive nature， the huge animal  (9)  （mean）no real harm．He was just saying： " I'm king of this forest， and here is your reminder! "Once his message was delivered， he allowed me   (10)  （stay）and watch．

Felicity Miller,a 32-year-old British woman,  (1)  has a Chinese husband,still remembers the  (2)  (excite) when she first learned to use the “red packet” function on WeChat in 2015.She sent and grabbed some red packets in her Chinese family’s group.The rule in her family was that the person who grabbed the  (3)  (high) amount sent the next.

      Attracted by the unique way of communicating,many foreigners  (4)  (join) in sending and grabbing red packets so far.Usually,the money in each packet is random.Thus the amount of money one can grab  (5)  (large) depends on his or her luck,from 0.01 yuan to less than 200 yuan.Many foreigners get more familiar  (6)  Chinese culture through “red packets”.Two years ago,when Felicity Miller was sent 5.20 or 8.88 yuan red packets,she had no clue about the  (7)  (hide)meanings.Now,she has not only known about them,but also has sent a few.

      However,the popularity of virtual red packets doesn’t stop people sending paper red packets  (8)  (contain) real cash during the Spring Festival.It  (9)  (call) lucky money.In Chinese tradition,people take giving children lucky money as  (10)  blessing.