北京是个缺水的城市吗?
参考答案:
是。由于人口密度高,北京人均水资源年占有量仅为300立方米,而国际公认的人均水资源年占有量的下限是1000立方米。所以我们要节约用水。
Find out the mistakes and correct them. 找出错误并改正。
( ) l. Jenny go to school five times a week.
A B C
( ) 2. The flower is strong and health.
( ) 3. Did you bought snacks?
( ) 4. You don't have a book, I don't have too.
( ) 5. The words son and sun is different.
下列属于风险因素的有()。
A.健康记录
B.路面潮湿
C.火灾
D.汽车性能
E.天干物燥