There is ________ chicken in the refrige

阅读理解。

     Look at this photo. This is a photo of my family. There are five people in it, my father, my mother,

my two sisters and I. My brother is Bob: He is 21 years old. My two sisters are twins (双胞胎). They are l6.

One of them is Gina ,and the other is Jane. I am l2. My name is Tom Brown.

     My father is a doctor (医生). He likes his work. He is 45. My mother is a teacher. She is in No.6 Middle

School. My parents work (工作) hard (努力). We study very hard, too.We are very happy.(幸福).

1. How many people are there in the family?

A. Four.

B. Five.

C. Six.

D. Seven.

2. —How old is Bob? 

    —He is ______.

A. 21.

B. 16.

C. 45

D. 12.

3. Where does Tom's mother work?

A. A hospital.

B. A.school.

C. A post office.

D. A shop.

4. —Who is Jane?

    —She's Bob's ______.

A. mother

B. aunt

C. grandmother

D. sister

5. —How old is Gina?

   —She is _______.

A. 21.

B. 16.

C. 45

D. 12.

指出错误并改正。

1. It makes a good sense to take exercise and keep fit.

    ___________________________________________

2. He told us never eat too much fatty food.

    ___________________________________________

3. Mother told me to let Henry to clean the sitting room.

    ___________________________________________

4. He said the children to keep away from the fire.

    ___________________________________________

5. The headmaster suggested that the students would go skating.

    ___________________________________________

你认为以下数据合理的是（　　）

①1枚1元硬币质量约6g                      ②1度电可以使家用电风扇正常工作1h

③超音速战斗机的最大速度可达500km/h       ④恩施地区夏季的最高温度约25℃

⑤一只鸡蛋重约0.5N                        ⑥刘翔l10m跨栏的平均速度约20m/s

⑦水的密度为1.0kg/m³                     ⑧学校课桌高约80mm．

A．①⑤

B．②④

C．⑦⑧

D．③⑥

所谓实物检验，就是根据（）和有关技术资料对实物进行数量和质量检验。

A.发货明细表

B.供货单位提供的材质证明书

C.入库单

D.订货合同

对于固定量订货系统，如果需求标准差变为原来的2倍，则安全库存水平（）

A.原来的2倍

B.减少1倍

C.原来的1.4倍

D.不变