皮皮学，免费搜题
登录
搜题
【单选题】
爱情是有( )构成的综合体A.
生理因素
B.
心理因素
C.
社会因素
D.
以上三者
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】— Do you want to study in the famous research institute? — Of course, anyone that _______ be chosen may be lucky. [ ]
A.
should
B.
could
C.
must
D.
may
【简答题】设当x=θ时，函数f（x）=sinx+2cosx取得最大值，则cosθ=______．
【简答题】设当x=θ时，函数f（x）=sinx-2cosx取得最大值，则cosθ=______．
【简答题】At first the institute refused to purchase thetelescope, but this decision was _____ revised. A. occasionally B. consequently C. successively D. subsequently.
【简答题】设当x=θ时，函数f(x)＝sinx－2cosx取得最大值，则cosθ=______
【单选题】An unhappy childhood may have some negative effects on a person's character; however, they are not always ________. [ ]
A.
practical
B.
avoidable
C.
permanent
D.
beneficial
【简答题】听力原文：Researchers have found that daily walking may improve sleep quality. They have also noticed that only those who exercise in the morning have the beneficial effects on sleep. Those who exercised i...
【单选题】测定下列金属污染物，水样保存时不能加酸酸化的是 。A. Pb2+ B. Cd2+ C. Cr6+ D. Hg2+
A.
Pb 2+
B.
Cd 2+
C.
Cr 6+
D.
Hg 2+
【简答题】设当x=θ时,函数f(x)=sinx-2cosx取得最大值,则cosθ=____.
相关题目：
参考解析：
知识点：
题目纠错 0
发布
