句型转换。

1.  Zoos provide homes for many endangered animals.  (改为同义句 )

     Zoos       many endangered animals                 

2.  I am writing to say that I am against building a new zoo in our town. (对画线部分提问)

                are you                                     ?

3.  I think that animals should not live in zoos (改为同义句)

    I       think that animals                  in zoos.

4.  It's easy to recycle paper and books. (改为同义句)

        ____ paper and books        easy,

5. You have probably never heard of Amy Winterbourne.（改为反意疑问句）

    You have probably never heard-of Amy Winterbourne,                 ?

中药芒硝鉴别中，检查硫酸盐采用最常用试剂为（）。

A.氯化钠

B.氯化铵

C.氯化钡

D.硝酸钠