1. Under the influence of financial crisis, ______ unemployment is very high at the moment, it is very difficult for people to find _____ work.

A. the; /                       B. /; /                   C. the; a                             D. an; the

2. Man has already landed on the moon, but it’s still a question now _____ man can land on the Mars in the near future.

A. that                          B. which               C. whether                    D. what