入库流量采用（）法进行计算，根据出库水量、入水库的时段变化和库容曲线计算。 A.坡度

阅读理解。

The following books are about a cute dog called Clifford.

     CLIFFORD VISITS THE HOSPITAL($4.20)

     No Dogs Are Allowed! But Clifford, the small red puppy, visits the hospital and cheers up the patients(患者). They all love this dog.

     CLIFFORD'S Halloween ($3.99)

     Clifford loves holidays, especially(尤其)Halloween(万圣节).What is Clifford doing for Halloween?

     CLIFFORD'S SPORTS DAY($4.25)

     Clifford goes to school with Emily to take part in sports day activities(活动).

     CLIFFORD AND THE BIG STORM($4.28)

     Clifford and Emily go to her grandma's house, and Clifford saves the house from a big storm.

1. The underlined words "cheer up" mean _______ in Chinese.

A. 使治疗

B. 使伤害

C. 使振奋

D. 使烦恼

2. Which festival does Clifford love best?

                A                B                     C                        D

3. What does Clifford do at school?  

A. He joins the sports club.

B. He joins the English club.

C. He takes part in after-school activities.

D. He takes part in sports day activities.

4. Where does Clifford go in the last book?

A. To Emily's grandma's house.

B. To Emily's school.

C. To a hospital.

D. To a party.

5. How much should you pay if you want to buy Clifford's Halloween and Clifford's Sports Day?  

A. $8.19.

B. $8.24.

C. $8.45.

D. $8.53.

因式分-x²+2xy+y²=______．

一项对30名年龄在3岁的独生孩子与30名同龄非独生的第一胎孩子的研究发现，这两组孩子日常行为能力非常相似，这种日常行为能力包括语言能力、对外界的反应能力以及和同龄人、他们的家长及其他大人相处的能力等。因此，独生孩子与非独生孩子的社会能力发展几乎一致。
以下哪项如果为真，最能削弱上述结论( )

A．进行对比的两组孩子是不同地区的孩子
B．独生孩子与母亲的接触时间多于非独生孩子与母亲接触的时间
C．家长通常在第一胎孩子接近3岁时怀有他们的第二胎孩子
D．大部分参与此项目的研究者没有兄弟姐妹

对于亲职不当与亲职缺失儿童，如针对陷入非常危险境地的被虐待儿童，社工用机构养育替代了原生家庭养育，这属于哪种类型的儿童社工的类型（）。

A、保护性

B、补偿性

C、支持性

D、替代性

纲材与铝材进行表面处理后，其结果是（）。

A.尺寸同时变大

B.纲材尺寸变小，铝材尺寸变大

C.铝材尺寸变小，纲材尺寸变大

D.尺寸同时变小