问题
选择题
种子萌发必需的外界条件不包括（ ）
A．充足的空气
B．一定的光照
C．适宜的温度
D．适量的水分
答案
答案：B
搜题请搜索小程序“爱下问搜题”
种子萌发必需的外界条件不包括（ ）
A．充足的空气
B．一定的光照
C．适宜的温度
D．适量的水分
答案：B
People make traffic 1 to keep order(维持秩序)on the road. The traffic rules also help to keep people 2 . People have to 3 many traffic rules. You must walk on the sidewalk or on the 4 of the road in China. Look both ways carefully 5 you walk across the street. If you like 6 a bike, don’t ride in the middle of the road or run through(闯)red traffic lights. When you ride a bike with a friend, 7 look around and talk. If you drive a car or a bus, you must 8 at traffic lights. You must always take a seat belt(安全带). Without belts, the driver and the passengers may be badly 9 in a sudden accident. If you travel by bus, get on or get off a bus only when it comes to a 10 , When it’s full ,don’t try to get inside, or you may fall off.
|