在经济周期的各阶段中，利润的增长幅度最大的是（）。 A.繁荣期 B.衰退期 C.谷底

Honey 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 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 -- a little bird called a honey guide.

The honey guide does not actually like honey, but it does like the wax(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 tot he nest. When they finally arrive at the nest, the follower reaches in to get the delicious honey as the bird patiently waits and watches. Some of the honey, and the wax, always fall 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 (下决心) 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(养蜂者) is taking honey from his beehives, and will even enter churches when beeswax candles are being lit.

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

A．It'ssmallinsize.

B．It'shiddenintrees.

C．It'scoveredwithwax.

D．It'shardtorecognize.小题2:What do the words "the follower" in Paragraph 2 refer to?

A．Abee.

B．Abird

C．Ahoneyseeker.

D．Abeekeeper.小题3: The honey guide is special in the way________.

A．itgetsitsfood

B．itgoestochurch

C．itsingsintheforest

D．itreachesintobees'nests小题4:What can be the best title for the text?

A．WildBees

B．WaxandHoney

C．BeekeepinginAfrica

D．Honey-Lover'sHelper

Ⅳ类关节腔积液常见于

A．Reiter综合征

B．血友病

C．晶体性关节炎

D．系统性红斑狼疮

E．化脓性关节炎

读长江水系图，完成（1）～（4）题．

（1）《长江之歌》里有句歌词：“你用健美的臂膀挽起高手大海…．”这里的高山和大海分别指的是：______．

A．巴颜喀拉山脉东海B．唐古拉山脉渤海

C．唐古拉山脉东海D．巴颜喀拉山脉渤海

（2）A河在G城流入长江，A河是______．

A．雅砻江B．岷江C．嘉陵江D．汉江

（3）长江具有航运、灌溉和水能之利，但常发生洪涝灾害．其洪灾多发江段位于______．

A．上游B．中游C．下游D．河口

（4）图中M水利工程枢纽是______．

A．三峡B．葛洲坝C．小浪底D．三门峡．

下列哪项不是深Ⅱ度烧伤创面的特点( )

A．创面可有或无水疱
B．创面痛觉迟钝
C．可见粗大树枝状栓塞血管
D．如无感染，约3～4周愈合
E．愈合后多遗有瘢痕

由操作不当引起加热炉炉管损坏的原因有（）等。

A、传热恶化

B、局部过热

C、火焰舔管

D、管内结焦