消化方式： ①物理性消化→牙齿______、舌的______、胃肠的______

长江流域，无疑也是中 * * 文化的 ______之一。考古发现 ______，旧石器时代处于长江上游今云南境内的元谋人，与黄河流域今陕西境内的蓝田人 ______。这个结论具有划时代的意义。 填入横线部分最恰当的一项是( )。

A．发源地 表明 共存

B．发祥地 证明 并存

C．发源地 证明 并存

D．发祥地 表明 共存

There are new findings that not enough sleep may cause people to gain weight. Researchers say a lack of sleep can produce hormonal(激素的) changes that increase feelings of hunger.

In one study, researchers in the United States examined information on more than 1000 people. The people had taken part in a long-term study of sleep disorders.

Some people slept less than five hours a night. They had 15 percent higher blood levels of a hormone called ghrelin than people who slept eight hours. And they had 15 percent less of the hormone leptin. Experts say ghrelin helps make people feel hungry; leptin makes you feel full.

The scientists say these hormonal changes may be a cause of obesity in Western societies. They note the combination that sleep limitation is common and food is widely available.

The results were not affected by how much people exercised. People who are awake longer have more time to burn energy. But the researchers say loss of sleep may increase hunger especially for high-calorie foods, so people gain weight. It seems that, for survival, the body may be designed to store more fat during times with less sleep.

Researchers from Stanford University in California and the University of Wisconsin did the study. They found that the best amount of sleep for weight control is 7.7 hours a night.

The Public Library of Science published the findings in its journal Medicine . Internet users can read the full study, free of charge, at plos. org.

小题1:Not enough sleep can cause obesity by ______.

A．burning more of your energy

B．making you want to eat more food

C．keeping you from doing exercise

D．helping you feel great without food小题2:Which would be a point supported by the reported findings?

The more you sleep, the farther away you are from obesity.

Those who don’t sleep at all are the most likely to put on weight.

Sleeping contributes more to obesity than eating.

It’s not wise to use sleep hours for exercise.

小题3:When you sleep 7.7 hours a night, you will ______ .

have your ghrelin level rise and leptin level drop

have your leptin level rise and ghrelin level drop

have your ghretin and leptin levels properly balanced

have your hunger increase and your weight decrease

小题4:The writer wrote this passage to _______ .

A．make a news report

B．offer a piece of medical advice

C．make an advertisement

D．keep a record of the old findings小题5:You can read the findings________.

A．Only on the Internet

B．only in Medicine

C．Both on the Internet and in Medicine

D．Neither on the Internet nor in Medicine

作为视觉特征侦察器的大脑相应皮层细胞可分为三类：一是简单细胞，二是复杂细胞，三是_________。

西南政法大学教授周国平在《尊重生命》中有这么一句经典的名言“热爱生命是幸福之本；同情生命是道德之本；敬畏生命是信仰之本。”下列观点与此相符的是（）

A.“人是会说话的工具”

B.“存天理，灭人欲”

C.“人是万物的尺度”

D.“信奉圣经，献身上帝”