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问题
选择题
互为相反数的两个数的积一定是（ ）
A.正数或0
B.负数或0
C.正数
D.负数
答案
答案：
B
填空题
看图完成句子。
1.
This is ____________ ____________.
2.
These are ____________ ____________.
3.
Look at my ____________.
4.
The ____________ are new.
5.
It's ____________ ____________.
6.
These are ____________.
7.
This is ____________ ____________.
8.
Here are ____________. ____________.
9.
This ____________ is big.
10.
These are ____________.
11.
They are young ____________.
12.
These are ____________.
查看答案
单项选择题
药学信息资料管理指()。
A．确定服务对象
B．传播药学知识
C．提供咨询服务
D．收集有关信息
E．编发医院药讯
查看答案
This is ____________ ____________.
These are ____________ ____________.
Look at my ____________.
The ____________ are new.
It's ____________ ____________.
These are ____________.
This is ____________ ____________.
Here are ____________. ____________.
This ____________ is big.
These are ____________.
They are young ____________.
These are ____________.