问题 单项选择题

某市数字城市项目主要包括A、B、C、D、E等五项任务,且五项任务可同时开展。各项任务的预计建设时间以及人力投入如下表所示。

以下安排中,()能较好地实现资源平衡,确保资源的有效利用。

A.五项任务同时开工 

B.待B任务完工后,再依次开展A、C、D、E四项任务 

C.同时开展A、B、D三项任务,待A任务完工后开展C任务、D任务完工后开展E任务 

D.同时开展A、B、D三项任务,待A任务完工后开展E任务、D任务完工后开展C任务

答案

参考答案:C

填空题
阅读理解

阅读理解。

      Around the world more and more people are taking part in dangerous sports and activities. Of course,

there have always been people who have looked for adventure-those who have climbed the highest mountains,

explored unknown parts of the world or sailed in small boats across the greatest oceans. Now, however,

there are people who seek an immediate excitement from a risky activity which may only last a few minutes

or even seconds.

      I would consider bungee jumping to be a good example of such an activity. You jump from a high place

(perhaps a bridge or a hot-air balloon)200 meters above the ground with an elastic (有弹性的) rope tied to

your ankles. You fall at up to l50 kilometers an hour until the rope stops you from hitting the ground. It is

estimated that two million people around the world have now tried bungee jumping. Other activities which

most people would say are as risky as bungee jumping include jumping from tall buildings and diving into

the sea from the top of high cliffs.

      Why do people take part in such activities as these?Some psychologists suggest that it is because life in

modern societies has become safe and boring. Not very long ago, people's lives were constantly under threat.

They had to go out and hunt for food, diseases could not easily be cured,and life was a continuous battle for

survival.

      Nowadays, according to many people, life offers little excitement. They live and work in comparatively

safe environment; they buy food in shops; and there are doctors and hospitals to look after them if they

become ill. The answer for some of these people is to seek danger in activities such as bungee jumping.

1. More and more people today ______. [ ]

A. are close to death in sports

B. are climbing the highest mountains

C. are trying activities such as bungee jumping

D. are looking for adventures such as exploring unknown places

2. In bungee jumping, you ______. [ ]

A. jump as high as you can

B. slide down a rope to the ground

C. fall towards the ground without a rope

D. attach yourself to a rope and fall to the ground

3. People probably take part in dangerous sports nowadays because ______. [ ]

A. they lack excitement

B. they have a lot of free time

C. they no longer need to hunt for food

D. they can go to hospital if they are injured

4. Which of the following is the best title for this text? [ ]

A. The Need for Excitement

B. The Boredom of Modern Life

C. Dangerous Sports: What and Why

D. Is Bungee Jumping Really Dangerous