下列说法正确的是( ) A.x=1是方程4x+3=0的解 B.m=1是方程9m+4

题型:选择题

问题:

下列说法正确的是(   )

A.x=1是方程4x+3=0的解

B.m=1是方程9m+4m=13的解

C.x=1是方程3x-2=3的解

D.x=0是方程0.5(x+3)=1.5的解

考点:方程的解
题型:选择题

阅读短文,选择正确答案。

   When Mr. David retired(退休), he bought a small house in a village near the sea. He liked it and hoped to live

a quiet life in it. But to his surprise, many visitors came to see his house in summer holidays, for it was the most

interesting building in the village. From morning to night, there were visitors outside the house. They kept

looking into the rooms through the windows and many of them even went into the house. He decided to drive

the visitors away. So he put a notice on the window. The notice said, "If you want to satisfy your curiosity

(好奇心), come in and look around. Price: twenty dollars." Mr. David was sure that the visitors would stop

coming, but he was wrong. More and more visitors came and Mr. David had to spend every day showing them

around his house. "I came here to retire, not to work as a guide (导游)", he said angrily. In the end, he sold the

house and moved away.

1. Mr. David's house was              that many visitors came to see it. [ ]

A. so small

B. so quiet

C. so interesting

D. such interesting

2. Mr. David put a notice on the window in order              . [ ]

A. to drive the visitors away

B. to satisfy the visitors curiosity

C. to let visitors come in and look around

D. to get some money out of the visitors

3. The notice made the visitors             . [ ]

A. more interested in his house

B. lost interest in his house

C. angry at the unfair price

D. feel happy about the price

4. After Mr. David put up the notice              . [ ]

A. the visitors didn't come any more

B. fewer and fewer visitors came to see his house

C. more and more visitors came for a visit

D. no visitor would pay the money for a visit

5. At last he had to sell his house and move away because             . [ ]

A. he did not like it at all

B. he could not work as a guide

C. he made enough money and wanted to buy a new expensive house

D. he could not live a quiet life in it

题型:选择题

—I’ll be away on a business trip for a week. Would you mind looking after my dog?

—Not at all. ________.

A.I’d like to

B.I’d rather not

C.I’d like it

D.I’ve no time

题型:选择题

实验室中要测量一只阻值约1kΩ的电阻。能提供的器材有:干电池两节、学生用电压表(量程为0~3V、0~15V)、学生用电流表(量程为0~0.6A、0~3A)、滑动变阻器(100Ω  2A)和电阻箱      (0~9999Ω  2A,)各一只、开关、导线若干。小明选择了适当器材,设计的电路如图16所示,

(1)请你按照小明的设计电路完成下面实物图的连接。(2分)

(2)小强认真研究了题中所给器材后,认为小明设计的电路不能测得待测电阻的阻值,请你分析小强作出判断的理由:______________________________________________

______________________________________________________________________。(2分)

(3)于是小强和小明一起重新制定的实验方案,他们选择了干电池两节、开关三只、待测电阻、___________、______­______、_____________和若干导线,利用等效替代法设计了电路,顺利地完成了实验。

请你将他们未写出的器材名称填在空格处,并将电路图画在虚线框中。(5分)

(4)若根据虚线框中的电路图,已完成了实物的连接,请写出测得待测电阻的主要实验步骤:(4分)

__________________________________________________

__________________________________________________

__________________________________________________

__________________________________________________

题型:选择题

烧 开 水 时 壶 嘴 上 方 冒 “白 气 ” ,这 是        (填 物 态 变 化 名 称 )现 象 ,水 沸 腾 时温 度      (填 “变 大 ” 、“变 小 ”或 “不 变 ” ) 。炎 热 的 夏 天 ,在 地 上 洒 水 感 到 凉 爽 ,这 是 利 用              来 降 低 温 度 。寒 冷 的 冬 天 ,挂 在 室 外 冰 冻 的衣服会也变干这是           (填 物 态 变 化 名 称 )现象。

题型:选择题

咳嗽痰热郁肺证,其痰的特点是

A.痰中带血、质浊、有腥臭味
B.痰多、色黄、质稠
C.痰白、质稀
D.脓血相兼浊痰、有腥臭味
E.痰少、质黏、夹有血丝

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