2.D.蜜蜂发现食物会返回蜂窝.通知其它蜜蜂. 查看更多

 

题目列表(包括答案和解析)

在电磁学发展过程中,许多科学家做出了贡献。下列说法正确的是
A.奥斯特发现了电流磁效应;法拉第发现了电磁感应现象
B.麦克斯韦预言了电磁波;楞次用实验证实了电磁波的存在
C.库仑发现了点电荷的相互作用规律:密立根通过油滴实验测定了元电荷的数值
D.安培发现了磁场对运动电荷的作用规律:洛仑兹发现了磁场对电流的作用规律

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My name is Paul Miller. Sometimes I am too fat,  but lately I do not have this problem. My doctor tells me to jog. So early every morning I run for two miles. I do not run fast,  but I do not stop to rest. I jog before breakfast.

People call me a jogger. There are many joggers on my street. We often run together in the park or along the road. Jogging helps to keep us strong and healthy.

Jogging is very popular in the United States. People like to feel well and look nice. When my neighbors and I jog,  we help to keep our hearts and legs strong.

Many people do not jog,  but they do not get fat. They work hard on their jobs and they do not need to run before they go to work.

Diets are also popular. People on diets do not eat many foods that will make them fat. They learn to eat fruits and vegetables instead of candy or cakes.

My doctor tells me to eat only three meals a day. A diet is not necessary if I do not eat between meals. Some people like to eat many times a day. This is called snacking.

I feel healthy and my doctor is happy because I jog every day and I do not snack in the evening or after breakfast.

1.Jogging is a king of sport. One has the sport with       .

A.hands            B.legs              C.head             D.back

2.What’s the result after Paul Miller has jogged?

A.He seems to be very thin.

B.He can eat much.

C.He doesn’t look fat

D.He can eat much

3.Jogging can’t help us to     .

A.get fat                                B.be strong

C.be healthy                             D.look nice

4.If you snack, you will surely eat something     .

A.full of meat

B.with fruits and vegetables

C.quickly

D.in the evening or after breakfast

5.“Diet” in the passage means “     ” in Chinese.

A.规定的食物                           B.肉类食物

C.运动食物                             D.水果类食物

 

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My name is Paul Miller. Sometimes I am too fat,  but lately I do not have this problem. My doctor tells me to jog. So early every morning I run for two miles. I do not run fast,  but I do not stop to rest. I jog before breakfast.
People call me a jogger. There are many joggers on my street. We often run together in the park or along the road. Jogging helps to keep us strong and healthy.
Jogging is very popular in the United States. People like to feel well and look nice. When my neighbors and I jog,  we help to keep our hearts and legs strong.
Many people do not jog,  but they do not get fat. They work hard on their jobs and they do not need to run before they go to work.
Diets are also popular. People on diets do not eat many foods that will make them fat. They learn to eat fruits and vegetables instead of candy or cakes.
My doctor tells me to eat only three meals a day. A diet is not necessary if I do not eat between meals. Some people like to eat many times a day. This is called snacking.
I feel healthy and my doctor is happy because I jog every day and I do not snack in the evening or after breakfast.
【小题1】Jogging is a king of sport. One has the sport with       .

A.handsB.legsC.headD.back
【小题2】What’s the result after Paul Miller has jogged?
A.He seems to be very thin.
B.He can eat much.
C.He doesn’t look fat
D.He can eat much
【小题3】Jogging can’t help us to     .
A.get fatB.be strong
C.be healthyD.look nice
【小题4】If you snack, you will surely eat something     .
A.full of meat
B.with fruits and vegetables
C.quickly
D.in the evening or after breakfast
【小题5】“Diet” in the passage means “     ” in Chinese.
A.规定的食物B.肉类食物
C.运动食物D.水果类食物

查看答案和解析>>

My name is Paul Miller. Sometimes I am too fat,  but lately I do not have this problem. My doctor tells me to jog. So early every morning I run for two miles. I do not run fast,  but I do not stop to rest. I jog before breakfast.
People call me a jogger. There are many joggers on my street. We often run together in the park or along the road. Jogging helps to keep us strong and healthy.
Jogging is very popular in the United States. People like to feel well and look nice. When my neighbors and I jog,  we help to keep our hearts and legs strong.
Many people do not jog,  but they do not get fat. They work hard on their jobs and they do not need to run before they go to work.
Diets are also popular. People on diets do not eat many foods that will make them fat. They learn to eat fruits and vegetables instead of candy or cakes.
My doctor tells me to eat only three meals a day. A diet is not necessary if I do not eat between meals. Some people like to eat many times a day. This is called snacking.
I feel healthy and my doctor is happy because I jog every day and I do not snack in the evening or after breakfast.
小题1:Jogging is a king of sport. One has the sport with       .
A.handsB.legsC.headD.back
小题2:What’s the result after Paul Miller has jogged?
A.He seems to be very thin.
B.He can eat much.
C.He doesn’t look fat
D.He can eat much
小题3:Jogging can’t help us to     .
A.get fatB.be strong
C.be healthyD.look nice
小题4:If you snack, you will surely eat something     .
A.full of meat
B.with fruits and vegetables
C.quickly
D.in the evening or after breakfast
小题5:“Diet” in the passage means “     ” in Chinese.
A.规定的食物B.肉类食物
C.运动食物D.水果类食物

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[物理选修3-5模块][
(1)下列叙述中符合物理学史实的有(    )
A.托马斯·杨通过对光的干涉现象的研究,证实了光具有波动性
B.卢瑟福通过“α粒子散射实验”的研究,发现了原子核是由质子和中子组成的
C.麦克斯韦验证了电磁场理论,提出了光是一种电磁波
D.贝克勒尔发现了天然放射现象,并提出了原子的核式结构学说
(2)如图所示,光滑水平路面上,有一质量为m1=5kg的无动力小车以匀速率v0=2m/s向前行驶,小车由轻绳与另一质量为m2=25kg的车厢连结,车厢右端有一质量为m3=20kg的物体(可视为质点),物体与车厢的动摩擦因数为μ=0.2,开始物体静止在车厢上,绳子是松驰的.求:

①当小车、车厢、物体以共同速度运动时,物体相对车厢的位移(设物体不会从车厢上滑下);
②从绳拉紧到小车、车厢、物体具有共同速度所需时间.(取g=10m/s2

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