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问题 单项选择题

下列说法错误的是( )。

A．Java是一种网络编程语言
B．Java小应用程序在网络上的传输不受CPU的限制
C．Java提供了类库支持TCP/IP协议
D．Java语言允许使用指针访问内存

答案

参考答案：D

阅读理解

阅读理解。

1. Trees can get light from ______ in the daytime.

A. C02

B. O2

C. the sun

D. the moon

2. Chlorophyll is in _______.

A. sunlight

B. soil

C. air

D. leaves

3. We can get more O2 by _______.

A. planting more trees

B. cutting trees down

C. making the water in soil (土壤) polluted

D. making more CO2

4. CO2 from air and _______ can produce food for trees with the help of chlorophyll and sunlight.

A. water in the sea

B. water from soil

C. water in the river

D. O2 into air

5. The picture tells us _______.

A. how trees let O2 go into air in the sunlight

B. how trees let CO2 go into air in the sunlight

C. the sunlight isn't important to trees at all

D. trees can take in O2 and let out CO2

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判断题

贯入法适用于检测自然养护、龄期为28d或28d以上、自然风干状态、强度为0.4～16.0MPa的砌筑砂浆。（）
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