问题 问答题 简答题

工地砼拌制与试验室拌制有何区别?

答案

参考答案:

工地进行砼拌制时,试验室根据粗、细骨料的实际含水量换算成实际施工拌制的材料用量配合比,以配料通知单通知工地执行。

判断题
阅读理解

阅读理解。

     We have met the enemy and he is ours. We bought him at a pet shop. When monkey-pox, a disease

usually found in the African rain forest suddenly turns up in children in the American Midwest, it's hard

not to wonder of the disease that comes from foreign animals is homing in on human beings. "Most of the

infections (感染) we think of as human infections started in other animals," says Stephen Morse, director

of the Center for Public Health Preparedness at Columbia University.

     It's not just that we're going to where the animals are; we're also bringing them closer to us. Popular

foreign pets have brought a whole new disease to this country. A strange illness killed Isaksen's pets and

she now thinks that keeping foreign pets is a bad idea, "I don't think it's fair to have them as pets when

we have such a limited knowledge of them." says Isaksen.

     "Laws allowing these animals to be brought in from deep forest areas without stricter control need

changing." says Peter Schantz. Monkey-pox may be the wake-up call. Researchers believe infected

animals may infect their owners. We know very little about these new diseases. A new bug (病毒) may

be kind at first. But it may develop into something harmful. Monkey-pox doesn't look a major infectious

disease. But it is not impossible to pass the disease from person to person.

1. We learn from Paragraph 1 that the pet sold at the shop may ________.

A. come from Columbia

B. prevent us from being infected

C. enjoy being with children

D. suffer from monkey-pox

2. Why did Isaksen advise people not to have foreign pets?

A. Because they attack human beings.

B. Because we need to study native animals.

C. Because they can't live out of the rain forest.

D. Because we do not know much about them yet.

3. What does the phrase "the wake-up call" in Paragraph 3 most probably mean?

A. A new disease.

B. A clear warning.

C. A dangerous animal.

D. A morning call.