在下列运动方式中，“训练时踏板转速40～60周/分时肌肉的机械效率最高”属于（） A

Of the two T-shirts，I’d choose the ___one to save some money for a book.

A．cheapest

B．cheaper

C．more expensive

D．most expensive

When you are in Hong Kong, you must be very careful in the streets, because the traffic drives on the left. It is different from that in other areas of China.

If this is the first time you have come to Hong Kong, you must look to the right side and then the left before you cross the street. If the traffic lights are red, the traffic must stop. People on foot can cross the road carefully. But if the traffic lights are green, the traffic can go. People on foot mustn’t cross.

When people go to or come back from work in the morning or evening, the streets are very busy. Traffic is the most dangerous, especially for the children.

When you go by bus in Hong Kong, you have to be careful, too. You must always remember the traffic moves on the left. Have a look first, or you will go the wrong way.

In Hong Kong, there are many big buses with two floors. You can sit on the second floor. From there you can have a good view. It’s very interesting

根据短文内容，判断正(T)误(F)。

小题1:The traffic in Hong Kong drives on the right.

小题2: In Hong Kong，you can sit on the first floor of a bus and have the view of the whole city.

小题3:If the traffic lights are red, the traffic can go.

小题4:The traffic in Hong Kong isn’t the same as that in other areas of China.

小题5:According to the passage, we know we must obey the traffic rules.

小儿易患五迟、五软、解颅、遗尿等病，原因主要是

A．脾常不足

B．肺脏娇嫩

C．肾常虚

D．稚阴稚阳

E．纯阳之体

要证明某溶液中不含Fe³⁺而可能含有Fe²⁺．进行如下实验操作时最佳顺序为（　　） 

①加入足量氯水  ②加入足量KMnO₄溶液  ③加入少量NH₄SCN溶液．

A．③①

B．③②

C．①③

D．①②③

椎活动范围较大，因此其（）特点是手术麻醉选择位置。

A、中医

B、西医

C、生理

D、解剖