小永的家庭是一个和睦的大家庭,家中有爷爷奶奶、爸爸妈妈、姑姑,爸爸妈妈上班忙,爷

题型:选择题

问题:

小永的家庭是一个和睦的大家庭,家中有爷爷奶奶、爸爸妈妈、姑姑,爸爸妈妈上班忙,爷爷奶奶总是陪伴小永学习。小永现在三年级了,学习成绩不断进步,小永每天放学首先向爷爷奶奶汇报成绩。姑姑还未上班,家务活由姑姑来做,小永的爸爸妈妈下班回来总是乐得合不上嘴。在这个家庭里,家庭成员之间的家庭关系主要有[ ]

①父母与子女之间的关系②血缘关系③婚姻关系④收养与被收养之间的关系

A.①②③

B.②③④

C.①②④

D.①②③④

考点:亲子关系
题型:选择题

通过测定固体废物的哪种化学特性,可预估可能产生的熔渣量及排气中粒状物含量()。

A.容积密度

B.固定碳

C.灰分

D.挥发分

题型:选择题

患者头痛昏蒙,胸脘痞闷,呕恶痰涎,舌苔白腻,脉弦滑。其治方为:

A.温胆汤

B.苓桂术甘汤

C.顺气导痰汤

D.半夏白术天麻汤

E.二陈汤

题型:选择题

阅读理解。

                                                                  Water Safety

To Rescue a Drowning Person   

     Don't jump in to save a drowning person unless you are a trained lifesaver. The victim may pull you under.   

     Instead, try to toss (抛) a life preserver if you have one. Anything that will float can save the person's life.

A beach ball, a vacuum jug, or a picnic chest will also help. The National Safety Council points out that many

drowning could be prevented if people knew all the common objects that float well enough to help a drowning

person.   

     If you are in a boat, or you can find one, use the boat to try to reach the person in trouble. Turn the boat

so the victim can grab the stern. Don't stand up to help the victim. Stay seated so the boat won't overturn. Try

to balance the boat as the person climbs aboard. If the boat overturns, stay hanging on to the side for a while

to relax before trying to right it.

1. What kind of things should you throw to a person in trouble in the water?   [ ]

A. A belt.   

B. A cardboard box.   

C. Something that floats.   

D. Something large and heavy.

2. Which sentence belongs to the empty box?

    [ ]

A. Jump into water and swim to them.  

B. Paddle the boat towards the coast.

C. Stand up and shout for help.

D. Turn rear (后部) of boat towards the person in the water.

3. The first paragraph helps the reader understand why _____.   [ ]

A. there are so few drowning accidents   

B. people are often drowned themselves when they try to save a drowning person   

C. so many drowning people are able to save themselves   

D. it is important to drink plenty of fluids before swimming

4. Where would you be most likely to find a passage like this?   [ ]

A. In a home medical encyclopedia (百科全书).   

B. In a humorous story about a couple who sail around the world.   

C. In a newspaper account of the National Cup sailing competition.

D. In a science text.

题型:选择题

磨煤机停止延时()分钟,磨煤机减速机油泵联锁停止。

A、30;

B、10;

C、20;

D、35。

题型:选择题

正常情况下,唾液中氟的浓度为()。

A.0.005mmol/L

B.0.01mmol/L

C.0.015mmol/L

D.0.02mmol/L

E.0.05mmol/L

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