下列法规中，对商品房预售管理问题进行了明确规定的有（）。 A.《中华人民共和国城市房

根据短文内容判断下列句子的正误，正确的用“A”，错误的用“B”。 

     Basketball stars are usually tall.  The stars of other sports are sometimes short.Some of the best football players are not very tall. Short people often have better balance than tall people, so they do not fall over very often.In some sports the players must have good balance. For example, table tennis and running.You do not need long legs to run fast!Some of the fastest players in the world are not very tall.Some people are tall and some people are short。There is no medicine to make people grow taller or make people shorter.The tallest woman in the world is Sandy Allen.She is 2.31 meters tall and lives in the United States.The shortest person in the world is Gaul Mohammed from India.  He is only 57 centimeters tall.  Today young people in many countries grow taller than their parents.  This is because they eat better today.   Good food can help children grow.  

(    )1. All the stars are very tall.    

(    )2. Short people often have better balance than tall people.    

(    )3. If you want to run fast, you must have long legs.    

(    )4. There is a lot of medicine to make people grow taller.    

(    )5. Some young people grow taller than their parents because they eat better.

当时接触河水可能的温度是

A．15℃以上

B．10℃～15℃

C．10℃

D．4℃

E．4℃以下

Tom is often made _____ for twelve hours a day by the boss. [ ]

A. work

B. working

C. to work

D. to be working

流式细胞术可对单个细胞理化特性进行多参数的（）分析

A.定性

B.定量

C.直接

D.间接

E.定性及定量

软件工程研究的内容主要包括：软件开发技术和______。