1 . We are now enjoying the cool air in the room . _____ ，the farmers are harvesting crops in the hot sun .

A．Therefore	B．Besides
C．As a result	D．In the meanwhile

2 . Over 20,000 victims in the USA were killed in the Covid－19 outbreak and it seemed that Trump administration was _________.(应受责备). （根据汉语意思填空）

3 . __ __ many Chinese women have received higher education, there are still obstacles that prevent them from enjoying the same opportunities for education and employment as men．

A．Whether

B．Because

C．When

D．Although

4 . According to the information from the airline, a small sinking part of the runway of the airport is _____________ for the accident.

A．to blame

B．to be blamed

C．to blaming

D．to be blaming