在粉末涂装方法中，最具有发展前途的是（）。A、流化床涂装法 B、静电喷涂法 C、静电

阅读理解。

　　Mr Smith lives in Toronto. He's a doctor. His wife teaches English in a

middle school. They have two children.  One is a son called Mike and the other

is a daughter. She's only three months old. Mike loves the baby very much. He

often shows her to their guests(客人). Mike is young and doesn't go to school.  

He stays at home to help his mother look af ter the baby.

　　One day Mike's aunt comes to see the baby. She works in another city and

sees the baby for the first time. Mike shows the baby to his aunt.

　　"Look at the baby, aunt," says Mike. "She is beautiful.  I think she looks like

me ! "

　　"Does she like playing with you?" asks his aunt.

　　"I don't know:" answers the boy, "She can't speak yet. "

1. Mike is _____.

A. an American        

B. an Australian

C. an Englishman      

D. a Canadian

2. There're _____ people in Mr Smith's family.

A. two  

B. four    

C: five    

D. six

3. Mrs Smith is a _____.

A. doctor          

B. worker

C. teacher          

D. bookseller

4. The baby is Mike's _____.

A. elder sister          

B. younger sister

C. elder brother          

D. younger brother

5. Little Mike thinks _____.

A. he's beautiful, too

B. the baby is nice

C. his aunt is friendly to him

D. he loves the baby best

下列几种情况中，产生的后代不会发生性状分离的是

①纯种高茎豌豆×纯种矮茎豌豆→F₁F₂植株

②纯种红果皮番茄(♂)×纯种黄果皮番茄(♀)→F₁植株上所结番茄③黄色圆粒(YyRr)×绿色皱粒(yyrr)→子代④取基因型为AaBb植物的花药(AB)→单倍体→二倍体子代[ ]

A．①②

B．①③

C．②④

D．③④

能够增进小组教学效果的措施是( )

A．及时小结

B．以教师为核心

C．选拔学生骨干

D．小组成员在8～10人

外汇汇率的标价方法主要有（）。

A.直接标价法

B.间接标价法

C.美元标价法

D.人民币标价法

什么叫死水位、死库容？