新东方在线考博频道给大家整理的2021年考博英语词汇语法练习30,希望能够对大家的考博考试备考有所帮助，更多有关考博的备考内容，欢迎随时关注新东方在线考博频道。
1.Grace________ tears when she heard that her husband had been injured in an accident.
A) broke in
B) broke off
C) broke into
D) broke out
2.She refused to________ the car keys to her husband until he had promised to wear his safety belt.
A) hand in
B) hand out
C) hand down
D) hand over
3.Michael found it difficult to get his British jokes________ to American audiences.
A) around
B) on
C) across
D) down
4.Jack is________ about his chances of winning a gold medal at the Olympics next year.
A) optimistic
B) optional
C) obvious
D) outstanding
5.Nowadays advertising costs are no longer in reasonable________ to the total cost of the product.
A) proportion
B) correlation
C) connection
D) correspondence
6.When she saw the clouds she went back to the house to________ her umbrella.
A) carry
B) fetch
C) bring
D) reach
7.We must________ that the experiment is controlled as rigidly as possible.
A) assure
B) secure
C) ensure
D) issue
8.He was knocked down by a car and badly________ .
A) injured
B) damaged
C) harmed
D) wounded
9.Tropical diseases are comparatively________ in Britain.
A) scarce
B) minor
C) slight
D) rare
10.You must obtain________ from the authorities to fish in this river.
A) permit
B) permission
C) right
D) freedom
[答案]
1-5：CDCAA
6-10：BCADB
以上就是新东方在线考博频道给大家整理的2021年考博英语词汇语法练习30希望对大家有所帮助，更多备考内容，欢迎随时关注新东方在线考博频道。