肝癌患者行介入栓塞化疗术最常用栓塞剂是（） A.NBCA胶 B.38%碘化油 C.4

离子方程式BaCO₃ + 2H^＋ ＝ CO₂↑ + H₂O + Ba^2＋ 中的H^＋不能代表的物质是（    ）

①HCl；②H₂SO₄；③HNO₃；④NaHSO₄；⑤CH₃COOH

A．①③

B．①④⑤

C．②④⑤

D．①⑤

下列物质中能抑制水的电离且使溶液呈现出酸性的是：

A．Na₂CO₃

B．Al₂(SO₄)₃

C．K₂SO₄

D．H₂SO₄

完成对话.

      根据对话内容, 在空白处填写适当的话语 (话语可能是一个句子, 也可能是一个短语或

一个词), 使对话完整.

Melissa: Look! This looks so interesting. There are dragons (龙) and frogs on it.

   Li Lei: Ah, it's a great __1__ of ancient China.

Melissa: Really? __2__?

   Li Lei: I think it was invented in Han Dynasty (汉朝).

Melissa: __3__?             

   Li Lei: Guess!

Melissa: Was it used for holding water?

   Li Lei: No. It was used or testing earthquakes.

Melissa: Really? But how?

   Li Lei: Read this instruction, and __4__.

Melissa: Wow, it's really __5__. The Chinese are great.

血或尿中儿茶酚胺增高（）

A.肾性高血压

B.嗜铬细胞瘤

C.原发性醛固酮增多症

D.原发性高血压

E.皮质醇增多症

句子翻译

1. 许多人想要多做运动,因为他们想要保持健康.

Many people want to do __________ __________, because they want to ________ _________.

2. 你想和我一起去周游世界吗?我很乐意.

Would you like to __________ __________ ________ the world with me?

I'd ___________ ________.

3. 如果你想成为职业篮球运动员,必须每天练篮球.

If you want to be a _____________ basketball player,you should __________ it every day.

4. 长大后她想当演员吗?

Does she want to _______ an actor when she________ up?

5. 去年她参加演讲比赛,获得一等奖.

She ________ ________ ___________ the speech competition and _____ ______ prize last year.

6. 我认为家长应该与孩子们有更多的交流.

I think parents should _____________more ____________ their children.