阅读理解。 Jack is the name of a game that i

题型:阅读理解

问题:

阅读理解。

     Jack is the name of a game that is quite popular with children. To play jack, you'll need a small rubber

ball ten small metal objects: jacks. The rules for this game are very simple. To begin, you put the ten jacks on the floor or ground in front of you. Throw the ball up, pick up one jack and then catch the ball. Keep

the jack in your hand and then continue to pick up the other jacks one at a time. You lose your turn if

you do not catch the ball, or if you do not pick up a jack or you drop any jacks from your hands.

     When you finish all ten jacks, you now try to do the same thing again but with two jacks at a time. This

is more difficult, of course. You will lose your turn if you do not pick up exactly two jacks or if you make

any of the other mistakes.

1. To pick up a jack, you have to _____.

A. throw one of the jacks first

B. throw the first jack you've caught

C. throw the rubber ball into the air first

D. catch the falling ball first

2. How many times will you pick up jacks when you play with two jacks at a time

    without making any mistakes to win the game?

A. 5

B 3    

C. 4   

D. 6

3. Which of the following is true?

A. The name of a jack is very popular with children

B .The children like the game only for its simple rules.

C. You always do the same thing when you finish all ten jacks.

D. You have to pick up one jack as fast as possible before you catch the ball

考点:日常生活类阅读
题型:阅读理解
已知函数f(x)=cos2x+2sinxcosx-sin2x.
(1)求f(x)的最小正周期;
(2)求f(x)在区间[
π
8
4
]
上的最大值和最小值及取得最大最小值时对应x的值.
题型:阅读理解

2008年1月,特大暴风雪袭击了我国华南地区,在这场抗击暴风雪的战斗中,融雪剂发挥了一定的作用。某公司生产的融雪剂的成分是由氯化钠、氯化镁、硫酸铜、硝酸钠中的两种或两种以上的物质组成。某兴趣小组为探究其成分设计并完成了以下初步实验:

根据上述实验推断该融雪剂的成分中,一定不含__________,肯定含有的一种物质__________ (填写化学式)。

题型:阅读理解

前轮外倾的主要作用是使转向节主销向后倾斜。

题型:阅读理解

混凝土经泵送后塌落度会降低。

题型:阅读理解

反映资产总额周转速度的指标是______。

A.股东权益周转率
B.总资产周转率
C.固定资产周转率
D.存货周转率

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