正确答案：The author entered the operating room 14 years ago， which indicates the place where the story happens.

5、These crops are extremely（）to climate change， which has been a tricky problem for the local farmers.

A.dedicated

B.adjusted

C.vulnerable

D.obliged

正确答案：vulnerable

6、The suffix “-less” is often added to nouns in order to form（）that indicate that someone or something does not have the thing that the noun refers to.

A.Adjectives.

B.Nouns.

C.Adverbs.

D.Verbs.

正确答案：Adjectives.

第三章单元测试

1、Which description about the stove is not true？

A.It eats firewooD.B.It has a brass stomach.

C.It’s as white as snow.

D.It has a long neck.

正确答案：It’s as white as snow.

2、Why did the dog stand out here in the cold？

A.He grew too big for the master to keep.

B.He enjoyed the snow in winter.

C.He had bitten the master’s children in the leg.

D.He felt hot in the house.

正确答案：He had bitten the master’s children in the leg.

3、Which of the following prefixes does not indicate negation？

A.ir-

B.en-

C.il-

D.in-

正确答案：en-

4、It；was；a（）；forward， beyond；electricity；and；into；electronics.

A.leap

B.skip

C.bound

D.jump

正确答案：leap

5、Which of the following statements concerning adverbial clause of time is NOT true？

A.“As” can also be used when we want to say that when one thing changes， another thing changes at the same time.

B.“when” is often used to talk about an event that takes place at the same time as some longer action or event described in the main clause.

C.“While” is used when you are mentioning a time or event in the past and indicating that a situation has continued from then until now.

D.In formal speech and writing， we can often leave out “subject + be” in clauses with “when” and “while” if the main and subordinate clause refer to the same subject.

正确答案：“While” is used when you are mentioning a time or event in the past and indicating that a situation has continued from then until now.

6、Which of the following sentences is grammatically incorrect？

A.I have distrusted her ever since she cheated me.

B.She nearly passed out after she heard the news.

C.As reading this book， I have picked up more than one hundred printing mistakes.