1 . Feeling fearful is healthy ________ it helps you slow down and evaluate risks properly.

A．because

B．until

C．before

D．although

2 . Man may disappear________ other creatures who became too specialized to survive their environment.

A．as

B．just as

C．as if

D．as have

3 . Life is full of ups and downs. As we grow, we come to understand the fact that sometimes ________hard we try, things may not turn out as expected.

A．although

B．however

C．as

D．though

4 . We ________home ________it began to rain heavily.

A．had left; hardly when	B．hardly left; than
C．have hardly left; than	D．had hardly left; when

5 . Bear in mind ________ there is a will there is a way, so it is never too late to start so long as you are ________ ready to give yourself an opportunity.

A．that; so

B．where; too

C．that where; too

D．that if; so

6 . Classic American apple and cherry varieties might be the first dishes ________ to mind ________ the word “pie” is mentioned.

A．to come, when	B．coming, provided that
C．that came, when	D．to come, on the grounds that

7 . It was ______ I came to know the importance of English _____ I began to pay more attention to my English classes.

A．when, that

B．since, which

C．since, that

D．when, which

8 . ________you have access to stairs, there are numerous exercises you can do________ just two stairs.

A．Unless, to use

B．While, using

C．If, using

D．When, use

9 . The group of wild Asian elephants kept walking to the north all the way ______ they were taking a trip.

A．even if

B．as if

C．now that

D．so that

10 . ______presenting a negative nucleic acid test within 24 hours, Shanghai residents are not allowed to leave the city.

A．If

B．While

C．Though

D．Unless