皮皮学，免费搜题
登录
搜题
【多选题】
海水中主要的无机盐有 ( )A.
氯化钠
B.
氯化镁
C.
二氧化碳
D.
氧气
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
【简答题】若丨x-y+3丨与丨x+y-1995丨互为相反数，则 x+2y x-y 的值是______．
【简答题】Her father left her all his money when he died, which made her financially _ (dependent).
【简答题】已知 a ， b 是非零向量，且 a ， b 夹角为 π 3 ，则向量 p = a 丨 a 丨 + b 丨 b 丨 的模为______．
【单选题】The girl is going to study abroad next month and when he was young.
A.
so her father was
B.
so her father did
C.
so was her father
D.
so did her father
【简答题】计算：（－ ） －2 －（ －1） 0 ＋丨－2丨＋
【简答题】已知集合A={x丨2＜x＜4 }，B={x丨x＜3或x＞5 }则A∩B= (A) {x丨2＜x＜5 } (B) {x丨x＜4或x＞5 } (C) {x丨2＜x＜3 } (D) {x丨x＜2或x＞5 }
【简答题】已知向量 m ， n 的夹角为 π 6 ，且丨 m 丨= 3 ，丨 n 丨=2，则丨 m - n 丨=______．
【单选题】设 a ， b 是非零向量，若函数f（x）=（x a + b ）?（ a -x b ）的图象是一条直线，则必有（ ）
A.
a ⊥ b
B.
a ∥ b
C.
丨 a 丨=丨 b 丨
D.
丨 a 丨 ≠丨 b 丨
【单选题】Alice _____ her father that both she and her husband would be happy if he would live with them. [ ]
A.
convinced
B.
reinforced
C.
pledged
D.
required
【简答题】At first, Emma______ her father because she thought he was faithful to her mother.
相关题目：
参考解析：
知识点：
题目纠错 0
发布
