问题 选择题

实验中学STS课外小组参观了造酒厂的煮酒设施(如图所示).关于这套煮酒设施,下列说法正确的是(  )

A.在汽化池中酒精吸收的热量是化学能转化而来的

B.为了分离出水和酒精,汽化池中温度应控制在水的沸点

C.在冷凝池中发生了凝华现象

D.在冷凝池中进水管的水温高于出水管的水温

答案

A、汽化池中酒精吸收的热量是煤燃烧放出的,因此是化学能转化而来,是正确的;

B、只有将温度控制在酒精的沸点,才能将水和酒精分离,故说法错误;

C、冷凝池中发生的是液化现象,故说法错误;

D、液化是放热的,所以进水管中的水温较低,出水管中的水温较高,故说法错误.

故选A.

判断题
阅读理解

任务型阅读 

     阅读下列材料,从所给的六个选项(A、B、C、D、E和F)中选出符合各小题要求的最佳选项,选项中有一项为多余选项。

     Directions:  Read the following text and choose the most suitable heading from A-F for each

paragraph.  There is one extra heading which you do not need.

1._____

     The colored part of the eye is called the iris. There are three basic eye colours ─ brown, blue and

green. A few albino people have red or pink eyes, but these are very rare. Many people believe that

blue eyes are more delicate than brown eyes. In fact they are just as tough as brown eyes, although they

are more sensitive to light.

2.______

We only see part of the eyeball, although the whole eye is as big as a table tennis ball. Light enters the eye

through the pupil and passes through the lens. The lens focuses the light onto the retina at the back of the

eye. The retina sends the signal to the brain along the optic nerve. The image on the retina is actually

upside-down, but the brain corrects it. As we get older our eyesight becomes worse. This happens

because the lens isn't as flexible as when we are young and the eye muscles are weaker.

3._____

     Our eyes are the most important of our five senses. We receive 80% of our information about the

world through our eyes. We also send signals to other people with our eyes. Some eye signals are

unconscious. When we look at something nice, our pupils get bigger. But when we don't like something,

they become smaller. We cry when we are unhappy and sometimes when we are very happy. But we

can also control some eye signals. For example, we can wink at someone or raise an eyebrow.

Sunglasses make someone appear mysterious or dangerous, because they hide that eyes and so we can't

see the signals.

4._____  

     We find large eyes more attractive. Children have large eyes in proportion to their heads. Cartoon

characters always have large eyes, too. We can't actually change our eyes, but we can make them look

bigger with make-up. Eye make-up isn't new. Pictures in the Pyramids show that the ancient Egyptians

both men and women-used it. False eyelashes can make eyelashes longer. Eye shadow on the eyelids

can make the eyes look bigger and more dramatic.Glasses can also make eyes look bigger.

5. _______

      We do not normally look into someone's eyes for long, especially when they are very close. Eye

contact can be very threatening, so people only do it when they want to threaten someone. It is also

very intimate. This is why lovers gaze into each other's eyes. It's also why people don't look at each

other in lifts.

A. Ways to beautify eyes

B. Proper use of eye contact

C. Techniques of sending eye signals

D. Colours of people's eyes

E. Functions of different parts of the eye

F. Variety of messages conveyed through