2 . Integrity is a kind of quality -- and that’s what ________ takes to do anything well.

A．they

B．that

C．this

D．it

3 . 他们用了大约一个月的时间才弄明白如何启动这台设备。
It took them about one month to ________ _________ how to start the equipment.

4 . ________in the regulations that nobody ______any important information concerning the enterprise.

A．What is required; gives away	B．As is required; give away
C．It is required; give away	D．It requires; gives away

5 . Today, it is estimated that about 60 percent of domestic rice consumption in China is comprised of crops generated from Yuan’s hybrid strains. (英译汉)

6 . ________ was beyond their expectation that they finally reached a place ________ sold drinks and other small articles.

A．What; which	B．It; where
C．It; which	D．What; where

7 . It is estimated ________up to 60% of the local population is being reached through these radio broadcasts. （用适当的词填空）

8 . ________is a pity that you missed the film. (用适当的词填空)

9 . _____is known to us all that the 2022 Olympic Winter Games will take place in Beijing. (用适当的词填空)

10 . ________ is a good idea to take part in social activities, which can promote our understanding of the world. （用适当的词填空）