问题 单项选择题

黑盒测试是一种重要的测试策略,又称为数据驱动测试,其测试数据来源于______。

A.软件规格说明
B.软件设计说明
C.概要设计说明
D.详细设计说明

答案

参考答案:A

解析: 黑盒测试是一种重要的测试策略,又称为数据驱动的测试或输入/输出驱动的测试。使用这种测试方法时,将程序视为一个黑盒子,测试目标与程序的内部机制和结构完全无关,而是将重点集中放在发现程序不按其规格说明书正确运行的环境条件中。测试数据完全来源于软件规格说明。

阅读理解

阅读理解。

    Millions of years ago there were many types of dinosaurs on earth. Most dinosaurs were plant-eaters.

The Apatosaurus, for example, had a long thin neck so that it could eat leaves from trees. Other dinosaurs

were meat-eaters. The Tyrannosaurus Rex killed smaller dinosaurs for food.

    Dinosaurs were real animals that once lived on the earth, but they died out about 65 million years ago.

The disappearance of the dinosaurs is in some way a great mystery (谜). Some scientists think that the

climate (气候) changed suddenly. Fossils (化石) of trees tell us that the temperature dropped a lot and that

the level of the sea dropped as well. This means that it got suddenly much colder. Perhaps the dinosaurs

were too slow to change with the climate.

    A new idea is that a meteor (流星) crashed into the earth. Scientists discovered a place in Mexico where

they think the meteor crashed. They think that there was a lot of dust from the meteor. The dust landed on

the plants.Also the dust blocked (阻挡) the sun's light for as long as five years. Many animals, including

dinosaurs, were plant-eaters, and perhaps the dust killed them. This means there was nothing left for meat-

eating dinosaurs to eat, and so they died out. But, as many animals from that time didn't die, we are not 100%

sure what really happened.

1. What is the subject discussed in the text? [ ]

A. Dinosaurs, the real animals living millions of years ago.

B. The two types of dinosaurs.

C. The probable reasons for dinosaurs disappearance.

D. A meteor crashed into the earth.

2. What are the two possible explanations to the dinosaurs disappearance? [ ]

A. Temperature dropping and sea level dropping.

B. Climate changing and meteor's crashing.

C. The dropping of temperature and sea level.

D. Climate changing and the dust blocking the sun.

3. What is the direct cause of the disappearance of meat-eating dinosaurs? [ ]

A. A meteor's crashing.

B. The dust blocking the sun.

C. The plant-eating dinosaurs death.

D. It is still unknown.

单项选择题