【单选题】【消耗次数：1】
11.The United Nations managed to ______millions of people from hunger last year.
①
preserve
②
sell
③
save
④
. buy
参考答案：
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相关题目
【单选题】
No more having to buy expensive textbooks which you will only use for a year or two and then sell or _______ away.
①
get
②
give
③
take
④
gain
【单选题】
11.The children were ______their father.
①
part from
②
parted with
③
parted in
④
parted from
【单选题】
These children are ______ this year than they were last year.
①
more tall
②
more taller
③
very taller
④
much taller
【单选题】
These children are _________ this year than they were last year.
①
moretall
②
moretaller
③
verytaller
④
muchtaller
【单选题】
These children are_______this year than they were last year.
①
moretall
②
moretaller
③
verytaller
④
muchtaller
【单选题】
Niagara Falls is a great tourist _____, drawing millions of visitors every year.
①
attention
②
attraction
③
appointment
④
arrangement
【单选题】
9. These children are ____this year than they were last year.
①
more tall
②
more taller
③
very taller
④
much taller
随机题目
【单选题】
已知a=（3，1)，b=（x，-2），且a⊥b，则x的值为（ ）
①
<img src="20190823/1566540550755497.png" title="1566540550755497.png" alt="图片6.png" width="17" height="45"/>
②
<img src="20190823/1566540571684399.png" title="1566540571684399.png" alt="图片8.png" width="26" height="45"/>
③
<img src="20190823/1566540562849143.png" title="1566540562849143.png" alt="图片7.png" width="18" height="45"/>
④
<img src="20190823/1566540579921674.png" title="1566540579921674.png" alt="图片9.png" width="26" height="45"/>
【单选题】
正四棱锥底面边长是2，高是1，则斜高是（）
①
<img class="kfformula" src="20190809/1565327137897917.png" data-latex="\sqrt {2}"/>
②
<img class="kfformula" src="20190809/1565327137411071.png" data-latex="\sqrt {5}"/>
③
<img class="kfformula" src="20190809/1565327137707931.png" data-latex="2"/>
④
<img class="kfformula" src="20190809/1565327137840495.png" data-latex="\sqrt {3}"/>
【单选题】
抛掷一个骰子，点数大于3的概率为（ ）
①
<img src="20190823/1566541454394535.jpg" title="1566541454394535.jpg" alt="图片12.jpg" width="17" height="45"/>
②
<img src="20190823/1566541464278744.jpg" title="1566541464278744.jpg" alt="图片13.jpg" width="16" height="20"/>
③
<img src="20190823/1566541443582779.jpg" title="1566541443582779.jpg" alt="图片11.jpg" width="16" height="44"/>
④
<img src="20190823/1566541432696403.jpg" title="1566541432696403.jpg" alt="图片10.jpg" width="16" height="43"/>
【单选题】
一般地，推出营销策划案的工作步骤如下：①模拟演练；②进行事前协调；③突出策划案的“卖点”；④准备报告中使用的工具；⑤把握决策者的水平；⑥提炼阻击反对意见的技巧；⑦找到提案的恰当时机。该说法：（ ）
①
正确
②
错误
【单选题】
等差数列<img class="kfformula" src="20190809/1565317844150977.png" data-latex="\left \{ {{a}_{n}} \right \} "/>的首项<img class="kfformula" src="20190809/1565317844698638.png" data-latex="{a}_{1}=-2"/>，<img class="kfformula" src="20190809/1565317844536248.png" data-latex="{S}_{3}=3"/>，那么（ ）
①
<img class="kfformula" src="20190809/1565317844862924.png" data-latex="d=3"/>
②
<img class="kfformula" src="20190809/1565317844935823.png" data-latex="d=2"/>
③
<img class="kfformula" src="20190809/1565317844903124.png" data-latex="d=-2"/>
④
<img class="kfformula" src="20190809/1565317844953331.png" data-latex="d=-3"/>
【单选题】
连续投两枚硬币100次，出现“一正一反”的次数为53次，出现“全是反面”的次数为22次，则事件“一正一反”、“全是反面”的频率分别为（ ）。
①
22，53
②
0.22，0.53
③
0.53，0.22
④
53，22