【单选题】【消耗次数：1】
两条平行直线img class=kfformula src=zzximg/20190809/1565322829875215.png data-latex=3x+4y-7=0/img class=kfformula src=zzximg/20190809/1565322829154016.png data-latex=3x+4y+8=0/之间的距离是（ ）
①
img class=kfformula src=zzximg/20190809/1565322829833725.png data-latex=\frac {1} {5} width=87 height=63/
②
img class=kfformula src=zzximg/20190809/1565322829406438.png data-latex=15/
③
img class=kfformula src=zzximg/20190809/1565322829721740.png data-latex=3\sqrt {2}/
④
img class=kfformula src=zzximg/20190809/1565322829886592.png data-latex=3/
参考答案：
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相关题目
【单选题】
已知img class=kfformula src=zzximg/20190809/1565322050560879.png data-latex=A\left ( {0，-2} \right )/img class=kfformula src=zzximg/20190809/1565322050489966.png data-latex=B\left ( {x，6} \right )/的中点坐标为img class=kfformula src=zzximg/20190809/1565322050782302.png data-latex=\left ( {-1，y} \right )/img class=kfformula src=zzximg/20190809/1565322050701271.png data-latex=x/img class=kfformula src=zzximg/20190809/1565322050277662.png data-latex=y/的值分别为（ ）
①
img class=kfformula src=zzximg/20190809/1565322050607462.png data-latex=x=2，y=4/
②
img class=kfformula src=zzximg/20190809/1565322050205695.png data-latex=x=-2，y=2/
③
img class=kfformula src=zzximg/20190809/1565322050358526.png data-latex=x=-4，y=-2/
④
img class=kfformula src=zzximg/20190809/1565322050656212.png data-latex=x=-4，y=25/
【单选题】
两条平行直线<img class="kfformula" src="20190809/1565322829875215.png" data-latex="3x+4y-7=0"/>和<img class="kfformula" src="20190809/1565322829154016.png" data-latex="3x+4y+8=0"/>之间的距离是（ ）
①
<img class="kfformula" src="20190809/1565322829886592.png" data-latex="3"/>
②
<img class="kfformula" src="20190809/1565322829721740.png" data-latex="3\sqrt {2}"/>
③
<img class="kfformula" src="20190809/1565322829406438.png" data-latex="15"/>
④
<img class="kfformula" src="20190809/1565322829833725.png" data-latex="\frac {1} {5}" width="87" height="63"/>
【单选题】
已知<img class="kfformula" src="20190809/1565322050560879.png" data-latex="A\left ( {0，-2} \right )"/>，<img class="kfformula" src="20190809/1565322050489966.png" data-latex="B\left ( {x，6} \right )"/>的中点坐标为<img class="kfformula" src="20190809/1565322050782302.png" data-latex="\left ( {-1，y} \right )"/>，则<img class="kfformula" src="20190809/1565322050701271.png" data-latex="x"/>，<img class="kfformula" src="20190809/1565322050277662.png" data-latex="y"/>的值分别为（ ）
①
<img class="kfformula" src="20190809/1565322050358526.png" data-latex="x=-4，y=-2"/>
②
<img class="kfformula" src="20190809/1565322050607462.png" data-latex="x=2，y=4"/>
③
<img class="kfformula" src="20190809/1565322050656212.png" data-latex="x=-4，y=25"/>
④
<img class="kfformula" src="20190809/1565322050205695.png" data-latex="x=-2，y=2"/>
【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】
在数列img class=kfformula src=zzximg/20190809/1565316783973080.png data-latex=\left \{ {{a}_{n}} \right \} /中，前img class=kfformula src=zzximg/20190809/1565316783992384.png data-latex=n/项和公式是img class=kfformula src=zzximg/20190809/1565316783683277.png data-latex={s}_{n}=4{n}^{2}-n/，那么img class=kfformula src=zzximg/20190809/1565316783325652.png data-latex={a}_{2}/为（ ）
①
14
②
3
③
11
④
17
【单选题】
两直线img class=kfformula src=zzximg/20190809/1565322635666732.png data-latex=3x+y-1=0/img class=kfformula src=zzximg/20190809/1565322635986296.png data-latex=x+3y-1=0/的位置关系是（ ）
①
平行
②
相交但不垂直
③
垂直
④
不确定
【单选题】
<img class="kfformula" src="20190809/1565313651838733.png" data-latex="\sqrt {7}+\sqrt {3}"/>与<img class="kfformula" src="20190809/1565313651801618.png" data-latex="\sqrt {7}-\sqrt {3}"/>的等比中项是（ ）
①
<img class="kfformula" src="20190809/1565313651278262.png" data-latex="4"/>
②
<img class="kfformula" src="20190809/1565313651577788.png" data-latex="\pm 4"/>
③
<img class="kfformula" src="20190809/1565313651689008.png" data-latex="\pm 2"/>
④
<img class="kfformula" src="20190809/1565313651298877.png" data-latex="2"/>
【单选题】
正五棱锥的底面积是img class=kfformula src=zzximg/20190809/1565328530277328.png data-latex=26{cm}^{2}/，高是img class=kfformula src=zzximg/20190809/1565328530106797.png data-latex=6cm/，则其体积是（ ）。
①
img class=kfformula src=zzximg/20190809/1565328531496628.png data-latex=156{cm}^{3}/
②
img class=kfformula src=zzximg/20190809/1565328531242148.png data-latex=78{cm}^{3}/
③
img class=kfformula src=zzximg/20190809/1565328531884474.png data-latex={52cm}^{3}/
④
img class=kfformula src=zzximg/20190809/1565328531591499.png data-latex=104{cm}^{3}/
【单选题】
在正方体img class=kfformula src=zzximg/20190809/1565328255613453.png data-latex=ABCD\_ {A}_{1}{B}_{1}{C}_{1}{D}_{1}/img class=kfformula src=zzximg/20190809/1565328255952220.png data-latex={A}_{1}B/img class=kfformula src=zzximg/20190809/1565328255653689.png data-latex=AC/所成的角是（ ）
①
45°
②
60°
③
90°
④
120°
【单选题】
等差数列<img class="kfformula" src="20190809/1565315219717157.png" data-latex="\left \{ {{a}_{n}} \right \} "/>首项<img class="kfformula" src="20190809/1565315219801596.png" data-latex="{a}_{1}=1"/>，公差<img class="kfformula" src="20190809/1565315219560191.png" data-latex="d=-3"/>，当<img class="kfformula" src="20190809/1565315219192999.png" data-latex="{a}_{n}=-56"/>时，项数<img class="kfformula" src="20190809/1565315219715609.png" data-latex="n"/>等于（ ）
①
18
②
19
③
20
④
21
随机题目
【单选题】
The new test should ( ) doctors to detect the disease early.
①
make
②
able
③
enable
④
disable
【单选题】
George is ( ) for designing the entire project.
①
capable
②
distinct
③
joint
④
responsible
【简答题】
将句子翻译成英文：我希望这个决定是基于理性思考，而不是情感。(rational, emotion)
【简答题】
将句子翻译成英文：这些虚拟教学设施能使来自国外的学生在真实的情景中学习外语至少3个月。(virtual, minimum)
【单选题】
( ) the kids have left home we’ve got a lot of extra space.
①
Because
②
Now that
③
During
④
From
【单选题】
The students return in September for the start of the new ( ) year.
①
annual
②
academic
③
diplomatic
④
digital
【单选题】
The booklet offers practical advice ( ) people with housing problems.
①
in
②
to
③
from
④
about
【简答题】
将句子翻译成英文：鲁迅是中国最伟大的作家之一，同时也是世界杰出文学家之一。(outstanding, literature)