皮皮学，免费搜题
登录
搜题
【简答题】
集合A={1,2,3,4},则在上的所有二元关系中,对称关系的数目为_______个,自反关系的数目为______个,而在所有A A函数中,有____个。
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】– You haven’t been to Beijing, have you ? -- . How I wish to go there!
A.
Yes, I have.
B.
No, I haven’t.
C.
Yes, I haven’t.
D.
No, I have.
【简答题】La madre no quiere que el niño (salir)_______de casa.
【简答题】Which of the following is a reason for thelegalization of the hemp plant? [A] Both the hemp and the marijuana plantare healthy for people. [B] Productive members of society dependon marijuana for prod...
【单选题】Como el niño quiere salir a jugar, la abuela _____ abriga con un suérter grueso.
A.
lo
B.
la
C.
se
D.
los
【单选题】El niño quiere asustar_____su madre_____ un grito fuerte.
A.
en, de
B.
a, con
C.
de, por
D.
para, sin
【简答题】El niño quiere tomar la leche y comer el huevo.
【单选题】Which of the following is a reason for the legalization of the hemp plant?
A.
Both the hemp and the marijuana plant are healthy for people.
B.
Productive members of society depend on marijuana for production.
C.
Only uncontrolled,, long time usage of marijuana will result in addiction.
D.
The hemp plant is a useful source for the production of paper and pulp.
【简答题】I haven’t been back to my hometown for years此题出自2015年湖北宜昌中考英语真题及答案 . ---I haven’t been back to my hometown for years. ---_________. You must miss your parents very much. A. Of course B. No way C. No, ...
【单选题】It can be inferred that which of the following is true of plant fecundity as it is defined in the passage? ______
A.
A plant's fecundity decreases as the percentage of unpollinated flowers on the plant increases.
B.
A plant's fecundity decreases as the number of flowers produced by the plant decreases.
C.
A plant's fecundity increases as the number of flowers produced by the plant increases.
D.
A plant's fecundity is usually low if the plant relies on a small number of insect species for pollinations
相关题目：
参考解析：
知识点：
题目纠错 0
发布
