【题目】佛山市三水健力宝厂生产的“魔水”驰名中外．“魔水”内溶有一定量的二氧化碳气体．打开瓶塞，“魔水”会自动喷出；喝了“魔水”后常会打嗝，说明气体在水中的溶解度与压强、温度有关．以下关于气体溶解度的说法正确的是（ ）

A．压强增大，气体溶解度不变

B．压强减小，气体溶解度增大

C．温度升高，气体溶解度减小

D．温度降低，气体溶解度减小

【题目】The question is not easy. It’s very_______ .

A. difficult B. difficulty

C. relaxing D. not difficult

【题目】“化学来源于生活”，圆梦中学的化学兴趣小组做了以下趣味实验：一定温度下，

有一杯食盐水，杯底尚有大量食盐固体不能溶解，现将新鲜的萝卜块放入其中，放置一段时

间。小组同学分别得出了以下说法，其中说法错误的是 （ ）

A．原食盐水一定是饱和溶故 B．萝卜块质量一定减少

C．杯中的食盐固体一定全部溶解 D．溶液的质量一定增加

【题目】

【1】—你有乒乓球拍吗?

—是的，我有。

—Do you__________ a ping-pong bat?

—Yes，I__________.

【2】—Jane有网球吗？

—不，她没有。

— ________Jane _________a tennis ball?

—No, she___________,

【3】让我们走吧！我们迟到了。

Let’s_______ ! We’re ________________.

【题目】下列有关溶液的说法中，正确的是（ ）

A．已达到饱和的氯化钠溶液中不能再溶解其他物质

B．20℃时，50g水中最多溶解18g氯化钠，则20℃时氯化钠的溶解度为18g

C．任何物质的饱和溶液在升高温度时，一定会变成该物质的不饱和溶液

D．相同温度时，同种溶质的饱和溶液一定比它的不饱和溶液浓

【题目】一杯20℃的NaNO3溶液，能证明它是饱和溶液的是（ ）

A．蒸发10g水有NaNO3晶体析出

B．降低10℃时，有NaNO3晶体析出

C．加入10gNANO3晶体，仍有NaNO3晶体未溶解

D．在该温度下，加入少许NANO3晶体，晶体质量不减少

【题目】My name is David. I’m an American boy. For me, sports are fun. I have a collection of sports things. I have six basketballs, three tennis rackets, nine volleyballs, four soccer balls, and five baseballs. I play sports and I watch them on TV. Do you play sports? Do you have a sports collection?

根据短文内容，回答下列问题。

【1】Is David American?

_______________________________________

【2】Are sports fun for David?

______________________________________

【3】Does David have a collection of sports things?

______________________________________

【4】How many baseballs does he have?

______________________________________

【5】Where does David watch sports?

______________________________________

【题目】t℃时，有一杯接近饱和的硝酸钾溶液，下列做法一定不能使其变为饱和溶液的是（ ）

A．恒温蒸发溶剂

B．降低溶液的温度

C．向溶液中加入硝酸钾

D．向溶液中加入t℃时硝酸钾的饱和溶液

【题目】Mila：Let’s play computer games.

Ella：That sounds interesting. Where’s your computer?

Mila：I don't have a computer. Do you have a computer?

Ella：No, I don't. But I have a TV. Let's watch TV.

Mila：No，that sounds boring (无趣的）.Let’s play tennis. I have a tennis racket.

Ella：Good. Where is it?

Mila：On the sofa. Do you have a racket?

Ella：No, I don't. Does your brother have a racket?

Mila：Yes, he does. And he has tennis balls.

【1】Does Mila have a computer?

A. She has two computers.

B. Yes, she does.

C. No, she doesn’t.

D. She has a TV.

【2】Mila has a tennis racket. Where is it?

A. It’s on the sofa.

B. It’s under the table.

C. It’s under the bed.

D. It’s on the table.

【3】Does Ella have a tennis racket?

A. Yes，she does.

B. Yes, she has.

C. No, she doesn’t.

D. No, she hasn’t.

【4】Mila’s brother has___________.

A. a football

B. a baseball

C. a basketball

D. a tennis racket and tennis balls

【5】_______ have a tennis racket.

A. Mila and Ella

B. Ella and Ella’s brother

C. Mila and Mila’s brother

D. Ella and Mila’s brother

【题目】A：What’s this in English?

B：【1】

A：【2】

B：Yes, I do.

A：【3】

B：It’s in my room.

A：Do you play ping-pong?

B：No. 【4】

A：Haha. I have two bats but I don't have a ping-pong ball.

B：【5】

A：Great! Let’s go.

A.Do you have a ping-pong ball?

B.I don’t have a ping-pong bat.

C.It’s a ping-pong ball.

D.Well，let’s play ping-pong now.

E.Where is it?