单选题：Why is a button needed?

题目分类：理工类
题目类型：单选题
查看权限：VIP

题目内容：

Why is a button needed? A．To minimize the cost of Eye Drop.
B．To choose as many objects as possible.
C．To make Eye Drop different from others.
D．To select what we want.

参考答案：

答案解析：

Greenhouse gases are indispensable to mankind, but the probl

Greenhouse gases are indispensable to mankind, but the problem mankind is faced

分类：理工类题型：单选题

查看答案

A newly formed black hole and the star it comes from are of

A newly formed black hole and the star it comes from are of __________.A．the cre

分类：理工类题型：单选题

查看答案

The Columbia University researchers are the first to use sea

The Columbia University researchers are the first to use sea-surface temperature

分类：理工类题型：单选题

查看答案

根据以下材料，回答题Computer MouseThe basic computer mouse is an amazi

根据以下材料，回答题Computer MouseThe basic computer mouse is an amazingly clever invent

分类：理工类题型：单选题

查看答案

The blood of each woman was tested once a month during pregn

The blood of each woman was tested once a month during pregnancy.A．Right B．Wrong

分类：理工类题型：单选题

查看答案