钢铁设备在封闭系统的水中发生耗氧腐蚀时，腐蚀速度随着温度的升高而：（） A.增大 B

It is generally believed that ______a piece of field is, ______ it produces.      [ ]

A. the more fertile; the higher output of grain  

B. more fertile; more output of grain     

C. the fertile; the higher output of grain      

D. the fertile; the more grain output  

腰椎间盘突出症的典型症状是

A．腰背部疼痛

B．坐骨神经痛

C．腰部活动受限

D．腰痛伴坐骨神经痛

E．下肢无力

前 * * 单纯性狭窄是指单发而无并发症，且狭窄长度

A．＜1cm

B．＜1.5cm

C．＞1.5cm且＜3cm

D．＜3cm

E．＜2cm

下列内容属于资产的特征的有()。

A、本质上是一种经济资源

B、是未来的交易、事项形成的

C、是过去的交易、事项形成的

D、是由企业拥有或控制的

E、预期能给企业带来未来的经济利益

阅读理解。

     Honey (蜂蜜) from the African forest is not only a kind of natural sugar, it is also delicious. Most

people, and many animals, like eating it. However, the only way for them to get that honey is to find a

wild bees' nest (巢) and take the honey from it. Often, these nests are high up in trees, and it is difficult

to find them. In parts of Africa, though, people and animals looking for honey have a strange and

unexpected helper一a little bird called a honey guide.

     The honey guide does not actually like honey, but it does like the wax (蜂蜡) in the beehives (蜂房).

The little bird cannot reach this wax, which is deep inside the bees' nest. So, when it finds a suitable nest,

it looks for someone to help it. The honey guide gives a loud cry that attracts the attention of both passing

animals and people. Once it has their attention, it flies through the forest, waiting from time to time for the

curious animal or person as it leads them to the nest. When they finally arrive at the nest, the follower

reaches in to get at the delicious honey as the bird patiently waits and watches. Some of the honey, and

the wax, always falls to the ground, and this is when the honey guide takes its share.

     Scientists do not know why the honey guide likes eating the wax, but it is very determined in its efforts

to get it. The birds seem to be able to smell wax from a long distance away. They will quickly arrive

whenever a beekeeper is taking honey from his beehives, and will even enter churches when beeswax

candles are being lit.

1. Why is it difficult to find a wild bees' nest?

A. It's small in size.

B. It's hidden in trees.

C. It's covered with wax.

D. It's hard to recognize.

2. What do the words "the follower" in Paragraph 2 refer to?

A. A bee.                          

B. A bird.

C. A honey seeker.                    

D. A beekeeper.

3. The honey guide is special in the way____________.

A. it gets its food

B. it goes to church

C. it sings in the forest

D. it reaches into bees' nests

4. What can be the best title for the text?

A. Wild Bees

B. Wax and Honey

C. Beekeeping in Africa

D. Honey-Lover's Helper