皮皮学，免费搜题
登录
搜题
【单选题】
细胞内的“消化系统”是A.
溶酶体
B.
线粒体
C.
内质网
D.
核糖体
E.
复合体
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
【简答题】挫折-攻击理论是（）提出的。
【单选题】One reason for quick population increase in underdeveloped countries is that ______.
A.
improved public health standards have reduced death rate greatly
B.
people can get government support if they have more kids
C.
those countries encourage people to have large families
D.
those countries have enough resources to support a large population
【单选题】Which of the following is among the benefits of learning an instrument for children?
A.
Improving behaviors and relieving stress.
B.
Promoting growth and improving intelligence.
C.
Boosting confidence and improving intelligence.
D.
Improving intelligence and strengthening memories.
【简答题】在特定的环境条件下重复出现的杂草种群组合,称为()。
相关题目：