皮皮学，免费搜题
登录
搜题
【单选题】
Why does the author mention crayons and freshly mown grass in paragraph 5?A.
To give examples of smells that can trigger memories and emotions
B.
To compare typical responses to two common smells
C.
To explain why smells are likely to affect a person's behavior
D.
To identify smells that can increase alertness and work efficiency
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】The electric shaver needs ______ before it can be used.
A.
repairing
B.
to repair
C.
being repaired
D.
to be repairing
【简答题】（3）据材料二、三，指出成立至抗战爆发前中国工业发展的特点。据统计该时期中国人口总数相对稳定，但工业的发展未能改变中国人均GDP下滑的走势，结合材料四及所学知识解释这一历史现象的原因。（12分）
【简答题】世界人口老龄化的特点是() A人口老龄化发展迅速 B老年人口重心向发展中国家转移 C人口平均寿命不断延长 D高龄老年人增长速度快 E多数国家老年女性人口超过男性
【判断题】After using an electric shaver, he has to go back over his chin
with a regular razor to have a clean shave by shaving
off what gets away from the electric shaver.
A.
正确
B.
错误