救生衣穿妥后应测试哨笛，若是晚间落水，还可使用所配备的救生衣_爱下问搜题

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问题判断题

救生衣穿妥后应测试哨笛，若是晚间落水，还可使用所配备的救生衣灯。（）

答案

参考答案：对

选择题

在RNH₂·H₂ORNH₃^＋＋OH^－的平衡中，要使RNH₂·H₂O的电离程度及c(OH^－)都增大，可采取的措施是

A．通入HCl

B．加少量NaOH固体

C．加水

D．升温

补全对话，情景问答

情景填词。
     Tim在问Jane，而后得知：在那边的课桌上的书分别是Lily 和Lucy 两个人的，然后Tim 告诉
Jane 那个骑自行车的男孩是Tom。
Tim: Whose _ 1__ those books _ 2__ there?
Jane: _ 3 _ book?
Tim :The 4__ on the desk.
Jane: They are _ 5__ and  _6__ . Who is that boy ?
Tim: Which boy ?
Jane: The _ 7__ _8__ the bike, _ 9_  the green coat.
Tim: Oh,  10_ Tom.

( ) 1. A. are
( ) 2. A. over
( ) 3. A. which
( ) 4. A. book
( ) 5. A. Lucy
( ) 6. A. Lily's
( ) 7. A. one
( ) 8. A. in
( ) 9. A. wear
( ) 10. A. This

B.  is
B. at
B. where
B. thing
B. Lucy's
B. Lily
B. boys
B. at
B. in
B. It's

C. the
C. in
C. what
C. books
C. her
C. their
C. girl
C. on
C. on
C. His

D. that
D. on
D. whose
D. pens
D. books
D. theirs
D. man
D. behind
D. with
D. That's