1 . The report _____________ (以……为基础) on the research was launched later. (根据汉语提示单词拼写)

2 . Soon we lost sight of that famous astronomer ________ LiQiang.

A．called

B．calling

C．to call

D．call

3 . 像拥有相同的货币和国防一样，他们也使用同一面国旗，称为“英国国旗”。（过去分词做后置定语，as well as）(汉译英)
__________________________________________________________________

4 . People today tend to make choices of their diets ________ (base) on what they believe. (所给词的适当形式填空)

5 . He made a proposal that the problems _______ paid special attention to.

A．referring to being

B．referred to being

C．referring to be

D．referred to be

7 . All the difficulties __________ (concern) with Pamina were solved by the prince. (所给词的适当形式填空)

8 . Grandfather and father, ________ at the table, are playing chess.

A．seated

B．are seating

C．seating

D．are seated

9 . The world is concerned about the water ______ (pollute) by a nuclear accident.（所给词的适当形式填空）

10 . The earliest ______ recipes for making Lu date back to Qimin Yaoshu, an ancient Chinese agricultural text written in the 5th century.

A．preserving	B．being preserved
C．preserved	D．having been preserved