在选择实验室或其他检查时应注意（） A.检查的灵敏度和特异性 B.安全性 C.成本与

Everyone (人人)needs to be healthy.

Do you eat healthy food every day? It’s important (重要)for your health. You need fruit, like oranges, apples and bananas. “ An apple a day can keep away（避开） the doctor (医生).” You also need vegetables, like carrots and broccoli. Fruit and vegetables are good for our health. But don’t eat lots of chocolate. It’s not good healthy food. What about dessert? Don’t eat lots of dessert because it’s not good for your health. Many people eat lots of chocolate and dessert, so they are unhealthy. Sports can also keep you healthy. Play sports every day. Don’t be lazy. You can be healthy.

小题1:What are healthy food?

A．Fruit and vegetables.

B．Bananas, apples and chocolate.

C．Fruit and dessert.

D．Vegetables and dessert.小题2:What keeps you healthy?

A．Food.

B．Sports.

C．Healthy food.

D．Healthy food and sports.小题3:文中划线句子“ An apple a day can keep away the doctor”的意思是________.

A．The doctor doesn’t like an apple.

B．You don’t need a doctor.

C．You bring an apple to the doctor and he runs away（跑走）.

D．You eat an apple a day and you can be healthy.小题4:猜测文中划线单词unhealthy的意思:________.

A．健康

B．不健康

C．饥饿

D．不饿小题5:Which is Right? (哪一项是正确的？)

A．Everyone is healthy.

B．We need to be healthy.

C．Food isn’t important.

D．A doctor is important.

5厘米写成分数是（    ）米，它的计数单位是（    ）。    

某实验室废水含有较多的盐酸，排放前应加入某种试剂将废水调至中性，下列试剂中最合适的是（　　）

A．AgNO₃溶液

B．NaOH溶液

C．稀醋酸

D．KNO₃溶液

压管应垂直或倾斜敷设，其倾斜度不小于（）。

由新车经销商直接参与二手车交易，通过二手车鉴定折算价格后充抵新车的部分车款，二手车客户支付差价后开走新车，二手车由经销商决定销售或者租赁属于______。

A．二手车销售

B．二手车置换

C．二手车翻新

D．二手车租赁