Nature reserves are very important for preserving many animals and plants, which would _______ run the risk of becoming extinct.
| A．otherwise | B．therefore | C．though | D．instead |
A recent study has ________an unexpected conclusion that the African elephant should be divided into two different species.
| A．kept up with | B．made up with | C．caught up with | D．come up with |
The weather is concerned with all of us because it________us so directly—what we wear，what we do，and even how we feel.
| A．moves | B．guides | C．affects | D．benefits |
I might fail，but________I insist on doing it.I never lose heart.
| A．someway | B．anyhow | C．then | D．meanwhile |
The two countries are going to meet to _______ some barriers to trade between them.
| A．make up | B．use up | C．turn down | D．break down |
If you're buying today's paper from the stand, could you get ________ for me?
| A．one | B．such | C．this | D．that |