题目内容
More often, the air in Hangzhou is dirty because of _____.
A.corn B.pollution C.medicine D.temperature
B
【解析】
试题分析：句意：因为污染，杭州的空气质量更经常地变差。because of因为，后跟名词，动名词，A.corn玉米 B.pollution 污染 C.medicine 药 D.temperature气温，空气因为污染变脏，故选B。
考点：考查名词的含义。
黄冈小状元解决问题天天练系列答案用方框中所给单词的适当形式填空，使短文通顺、正确、连贯（每个单词限用一次）.
deep watch or school other something accident few happen from |
School is where we learn, make friends and grow up. But ____1.___ happen daily in schools across the world. We hear reports of students falling down ____2.___ buildings while cleaning windows. Other students are hit by football on the playground. Three years ago, some students fell down on the stairs and were stepped on by __3.____, with tragic results.
We feel ____4.___ sorry for the loss of lives. There is ___5.____ we can do to bring the students back, but we can try to prevent (防止) such things from ____6.____ again. You should do the following things to prevent a stampede (踩踏)。
After class or school, don’t rush out at the same time. Wait until there are ___7.____ people trying to leave.
When you walk with a crowd of people, stay alert (警惕的) and ____8.____ your steps. Don’t play around.
Be familiar with your ___9.__ and learn where the safety exits are.
When there’s pushing and squeezing (挤)， don’t move and try to hold on to something. ___10.__ stay in a corner until the crowd leaves.