A WHO study finds half of all deaths in Africa are children，and people _________   age 60 make ____________half of all deaths around the world.

A. under; up        B. below; of         C. at；for            D. under; into

 school and university, many students choose to spend their several months on crash course in English after graduation from middle school.

A. During                       B. In between                  C. Through                     D. Over

1.春天，山上开满了美丽的野花。 (grow)

2.参加体育活动是劳逸结合的重要方式之一。(balance  n.)

3.据说中国将在医疗(medical care)方面有重大的改革。(report)

4.这项研究成果将极大地有利于沙漠地区的农业发展。(benefit)

5.他没能抓住这篇文章的主旨大意。(fail)

 Most Americans would prefer to keep their problems            themselves, and solve their problems ______ themselves.

A. to; by                      B. by; to                      C. for; to                     D. in; on

 He invited me to a dance after the show____ Christmas Eve.

A. at      B. on     C. in      D. by

 Try on this red skirt; you will look great         it.

A. on        B. by      C. in    D. for  

 Sorry, Madam. You’d better come tomorrow because it’s __________ the visiting hours.

A. during        B. at              C. beyond       D. before

 —You know, Bob is a little slow           understanding, so….

—So I have to be patient           him.

A. in; with       B. on ; with      C. in; to         D. at; for

 No one helped me. I did it all            myself.

A. for   B. by    C. from        D. to

 At the railway station, the mother waved goodbye to her daughter until the train was _______.

A. out of sight      B. out of reach      C. out of order    D. out of place