4．
根据首字母或中文提示写出单词或词组，或用括号里所给单词的正确形式填空。
（1）As the third longest river in the world, the health of the Yangtze River has raised c (关注，担心）both in China and abroad.
（2）We still have a long way to go to solve all the problems in ________________ to (关于) the Yangtze River.
（3） (一方面)，some scientists point out that if you clone an embryo, you can produce valuable human tissues.
（4）If mankind __________ (戏弄）nature in this way, we may be on our way to producing a real-life Frankenstein`s monster.
（5）It seems that I was correct to have doubts about _____________________(努力推进) cloning.
（6）The work of that Italian fellow,Severino Antinori, should not be l____________(合法的).
（7）Dolly the sheep was the first (克隆）animal, which died much younger than normal.
（8）The next morning she found the man ___________(lie) in bed, dead.
（9）The writer passed away, with his work_________________ (finish). What a pity!
（10）When___________(heat) to a certain temperature, ice becomes water.
（11）Two special government projects are also____________________(在实施中).
（12）They are working day and night to produce the products ___________________(ship) to Africa next month.
（13）However, many poorer nations must focus on____________ (meet) the everyday needs of their people.
（14）Since no one really knows whether GM food is safe, many countries have hesitated __________( give) permission for the production of GM foods.
（15）The orphan ______________(adopt) fifteen years ago by Mr John has grown into a handsome fellow.