1. [单选题]葫芦藓的孢子萌发以后形成原叶体(prothallus)。( )
A. 正确
B. 错误
2. [单选题]20 When are the visitors expected to ask questions?
A. During the lunch hour．
B. After the welcome speech
C. Before the tour of the labs
3. [单选题]Which of the following is true?
A. The water in Texas have been reduced by 75%.
B. Most industries in the world suffer from water shortagers.
C. The underground water in Saudi Arabia might run out in 50 years.
D. Good management of water use resulted from the project in the Central Valley.
4. [单选题]31_______
A. kept up with
B. caught up with
C. came up with
D. put up with
5. [单选题]On my desk is a photo that my father took of________ when I was a baby.
A. him
B. his
C. me
D. mine
6. [单选题]From “he has never looked back “in Paragraph 2 we learn that peter_
A. did not feel lonely
B. was always hopeful
C. did not think about the past
D. became more and more successful
7. [单选题]含有a mol FeBr2的溶液中，通入x mol Cl2。下列各项为通Cl2过程中，溶液内发生反应的离子方程式，其中不正确的是
A. x＝0.4a，2Fe2++Cl2＝2Fe3++2Cl-
B. x＝0.6a，2Br－+ Cl2＝Br2+2Cl－
C. x=a，2Fe2＋+2Br－+2Cl2＝Br2+2Fe3＋+4Cl－
D. x=1.5a，2Fe2＋+4Br－+3Cl2＝2Br2+2Fe3＋+6Cl－
8. [单选题]It can be inferred from the text that the author .
A. was sick of staying upstairs
B. cared much about her children
C. could not stand living a wooden house
D. did not deal well with her family affairs during the flood
9. [多选题]警察常从案发现场的人体气味来获取有用线索，人体气味的成分中含有以下化合物：①辛酸；②壬酸；③环十二醇；④5，9一十一烷酸内酯；⑤十八烷⑥己醛；⑦庚醛。下列说法正确的是
A. ①、②、⑥分子中碳原子数小于10，③、④、⑤分子中碳原子数大于10
B. ①、②是无机物，③、⑤、⑦是有机物
C. ①、②是酸性化合物，③、⑤不是酸性化合物
D. ②、③、④含氧元素，⑤、⑥、⑦不含氧元素
10. [单选题]39_____
A. anything
B. something
C. everything
D. nothing
