具有升浮性质的性味是（）。 A.甘、辛、凉 B.辛、苦、热 C.辛、甘、温 D.淡、

Mr Smith never does any reading in the evening ; ________________.

A．so does Mrs smith

B．neither doesn't Mrs smith

C．nor does Mrs smith

D．nor Mrs smith does

某跨国公司的业务系统需要提供全球性服务，该业务系统需要34小时*7天在线服务，系统业务繁忙，为了保证业务系统数据库中数据的安全，需要设计与实施数据转储机制，设完成该数据库每天数据增量的转储需要2个小时，在不考虑成本因素的情况下，下列最合理的是______。

A．配备高性能数据库服务器，通过事务传送机制实时地将数据库中的任何变化反映到备份环境中

B．每天划出长度为2小时的时问窗口tw，在tw内采用静态转储方法实现每天数据增量的转储

C．每天划出长度为2小时的时间窗口tw，在tw内采用动态转储方法实现每天数据增量的转储

D．每周做一次完全转储，每天选择浮动时间段对变化的数据进行转储

阅读理解。

     In July 1994 Jupiter, the largest planet in our solar system, was struck by 21 pieces of a comet (彗星).

When the fragment (碎片)landed in the southern part of the giant planet, the explosions were watched by

scientists here on earth. But what if our own planet was hit by a comet?

     The year is 2094. It has been announced that a comet is heading towards the Earth. Most of it will miss

our plant, but two fragments will probably hit the southern part of the Earth. The news has caused panic.

     On 17 July, a fragment four kilometers wide enters the Earth's atmosphere with a huge explosion. About

half of the fragment is destroyed. But the major part survives and hits the South Atlantic at 200 times the

speed of sound. The sea boils and an enormous wave is created and spreads. The wall of water rushes

towards southern Africa at 800 kilometers an hour. Cities on the African coast are totally destroyed and

millions of people are drowned. The wave moves into the Indian Ocean and heads towards Asia.

     Millions of people are already dead in the southern part of the Earth, but the north won't escape for long.

Tons of broken pieces are thrown into the atmosphere by the explosions. As the sun is hidden by clouds of

dust, temperatures around the world fall to almost zero. Crops are ruined. Wars break out as countries fight

for food. A year later civilization has collapsed. No more than 10 million people have survived.

     Could it really happen? In fact, it has already happened more than once in the history of the Earth. The

dinosaurs (恐龙) were on the Earth for over 160 million years. Then 65 million years ago they suddenly

disappeared. Many scientists believe that the Earth was hit by a space fragment. The dinosaurs couldn't

survive in the cold climate that followed and they became extinct. Will we meet the same end?

1. Which of the following is NOT TRUE according to the author's description of the disaster in 2094?

A. The whole world becomes extremely cold.

B. All the coastal cities in African are destroyed.

C. The whole mankind becomes extinct.

D. The visit of the comet results in wars.

2. Why does the author mention dinosaurs at the end of the passage?

A. Because they could only live in the warm climate.

B. Because they once dominated the Earth.

C. Because their extinction indicates future disasters.

D. Because dinosaurs and humans never live in the same age.

3.  In writing the passage, the author intends to _______.

A. give an accurate description of the possible disaster in the future

B. prove that humans will sooner or later be destroyed

C. tell the historical development of the Earth

D. warn of a possible disaster in the future

4.  It can be concluded that the passage is most probably part of a(n) ______.

A. horror story

B. news report

C. research paper

D. article of popular science

由于船舶位于海上，水源充足，所以船上的火灾比陆地的火灾容易扑灭。

中国抗战以来的第一次大捷是（）

A.台儿庄大捷

B.平型关大捷

C.淞沪会战

D.南昌会战