下列哪种疾病的原因为血小板异常（） A.过敏性紫癜 B.药物性紫癜 C.机械性紫癜

黄色圆粒豌豆与绿色圆粒豌豆杂交，对其子代的表现型按每对相对性状逐对进行分析和统计，其结果如下图。请据图回答(黄色Y对绿色y为显性，圆粒R对皱粒r为显性)：

(1)子代中圆粒与皱粒的比例为____________，黄色与绿色的比例是__________。

(2)亲本中黄色圆粒豌豆与绿色圆粒豌豆的基因型分别为___________、__________。

(3)子代中黄色圆粒的基因型为___________、______________。

Jimmy managed to make a(n)        profit out of the deal，for he had got such a good opportunity．

A．handsome

B．pretty

C．attractive

D．beautiful

将下列相应的地理事物用直线连接起来。

如何确定工件的拉形次数？

完形填空（共15小题；每小题2分，满分30分）

阅读下面短文，掌握其大意，然后从21-35各题所给的四个选项中选出一个最佳答案。

Every person needs water and a diet of healthy foods. These foods should contain some fat, some fiber, a little salt and so on.

People need energy  21 . They eat different kinds of food which change into energy. The energy is  22  in calories(卡). Even when you  23, you are using energy – about 65 calories an hour.  24  you are at school, or walking home, your body is burning up 100 calories an hour. When playing football or basketball, you  25  be using 400 calories an hour. On Sports Day, during the relay race, you will use most of all,  26  as much as 650 calories an hour.

The Chinese diet is considered to be the healthiest in the world. It contains a lot of fruit and green vegetables. It is  27  in fiber and low in sugar and fat. The Chinese eat less sugar than many other countries in the world. That is  28  lots of people in China have healthy white teeth.

People in the Western world do not eat such healthy foods. They eat  29  fat and sugar and don’t take enough  30 . Because of this, they  31  weight very easily. Their diet contains a lot of 32  in the form of potato crisps, potato chips, butter, cream and chocolate. They eat a lot of sugar which exist in cakes, soft drinks,  33  and so on. The result is that many of them become fat. 34 some have bad teeth. In some parts of Britain, one person in ten,  35  the age of thirty, has no teeth left.

21. A. to sleep    B. to live           C. to eat           D .to walk

22. A. measuring      B. taken            C. measured   D. measure

23. A. are asleep       B. have a dream        C. have a rest      D. go to bed

24. A. While            B. During          C. As               D. If

25. A. must                   B. should         C. need                D. might

26. A. surely            B. ever                  C. perhaps     D. seldom

27. A. rich                    B. poor                  C. good               D. bad

28. A. how                   B. why                   C. what                D. that

29. A. much too            B. many too            C. too many              D. too much

30. A. activities             B. food               C. work                    D. exercise

31. A. put on         B. gain on              C. get on                   D. put up

32. A. sugar                  B.fat                      C. salt           D. fiber

33. A. sweets         B. vegetables   C. meat                D. potato

34. A. But                    B. Or                     C. And               D. As

35. A. during         B. for                     C. with                     D. by