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            • 1.

              Please tell me how the Russian plane crash ________,which caused so many players’ deaths.

              A.came by      
              B.came down with
              C.come to        
              D.came about
            • 2.
              There’s no such thing as living alone. Never mind if you’re   (1)   only person in your house and have no dog, no cat, not even fish. You still have got several billion   (2)  (roommate) — and so do we all. Some of them are harmless, some are   (3)  (actual) helpful and some could even kill you. They are, of course, bacteria, fungi(菌类) and viruses, and like it or not, they’re on you, around you, and deeply within you. The fact that bacteria life is everywhere is not   (4)  (surprise). It’s something you    (5)    (learn) from your childhood when your mother told you not to drink water from someone else’s glass. There are lots of bacteria   (6)   are living in your tea kettle. There are bacteria   (7)   (sleep) with you on your bed. Scientists are beginning   (8)     realize) the richness of the microbiome(微生物群系) — which is as complex as the ones   (9)   (find) in oceans, rainforests, deserts and woodlands. Your house has a microbiome and   (10)     do you.
            • 3.

              阅读下面短文,按照句子结构的语法性和上下文连贯的要求,在空格处填入适当的词(每空不多于三个词)或使用括号中词语的正确形式填空。

              It was a busy day at the grocery store and the old couples were in line behind me with birthday balloons.

              They were chatting together about their rush to get ready for the party. From (1)          they said, I knew their nephew had a twin and something bad happened to the baby at birth. Though they did all they could (2)     (help) them but times were still tough for them.

              They seemed to be too nervous and were too (3)_______(anxiety) to leave, so I asked (4)         they wanted to go ahead of me or not. They didn’t understand what I (5)        (mean) at first. After knowing it, they were very appreciative. But they stood behind me.

              At that time I knew it had to be a significant day to them. Nothing could be (6)     (good) if someone offered to help them. So I told the cashier to add the balloons to my purchases. The old couples refused at first (7)            I insisted. I said, “You tell your sweet nephew that there are always nice people who want to give them (8)                hand in this world.” They thanked me over and over and the cashier got teary-eyed, (9)          (say) there was an angel in her line today.

              That little act of (10)                 (kind) made everyone who saw it feel good—but it made me feel the best of all!

            • 4.
              ---Why are you still here? Everybody has gone to attend the lecture by the president.

              ---Oh, I ___________ about it!

              A.wasn’t informed         
              B.hadn’t been informed
              C.haven’t informed        
              D.didn’t inform
            • 5.
              The company        (从……获益)from selling the new product..
            • 6.
              You are students in the No.168 Senior High School now, but you _______ in different junior high schools for three years.
              A.studies     
              B.have studied
              C.studied      
              D.were studying
            • 7.
              Professor Wang d            a lecture on education to the students last month.
            • 8.
              Father had great faith in me, which ___________(增强) my resolve to win the game.
            • 9.
              He _____________  (说服) some people to go back with to Greenland in around 1000 AD.
            • 10.
              Jackson _________finance in Peking University for four years and now he is in an American college for higher education.
              A.studied               
              B.had studied              
              C.has studied       
              D.studies
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