1.选择题- (共4题)
1.定滑轮在使用时相当于一个杠杆．如图所示，某人用绳子沿着倾斜方向通过定滑轮拉住钩码，已知人手的拉力为F，钩码重力为G．请在图中标出这只“杠杆”的支点O，画出拉力F、钩码重力G及它们的力臂（保留作图痕迹）
2.某市建立的垃圾焚烧电厂，年处理垃圾可达2.0×105t．生活垃圾的平均热值约为6.3×106J/kg，每燃烧1t生活垃圾可放出的热量是{#blank#}1{#/blank#}J，实际燃烧1t生活垃圾可获得7.56×108J的电能，那么生活垃圾燃烧发电的效率是{#blank#}2{#/blank#}．
3.斜坡长10m，顶端与底端的竖直高度为6m，当小莉沿着斜坡用F=100N的力把一质量为10 kg的货箱从斜坡底端缓慢地推到斜坡顶端的过程中，她对货厢做的功为{#blank#}1{#/blank#}J，货厢克服斜坡的摩擦力做的功是{#blank#}2{#/blank#}J．（g取10N/kg）
4.POS刷卡机的广泛应用给人们的生活带来了便利．POS机刷卡位置有一个饶有线圈的小铁环制成的检测头（如图所示）．在使用时，将带有磁条的信用卡在POS机指定位置刷一下，检测头的线圈中就会产生变化的电流，POS机便可读出磁条上的信息．下图中能反映POS刷卡机读出信息原理的是（ ）
2.单项选择- (共10题)
5.
——How many of you made it to the top of the mountain in the end?
——______. It was really tough.
——______. It was really tough.
| A．No one | B．Neither | C．None | D．Nobody |
6.
She had to work deep into the night, ______she couldn't have spread the messages to all the relevant people successfully.
| A．while | B．but | C．otherwise | D．so |
7.
E-Commerce ______ mislead customers at times even though it's more convenient and faster in general.
| A．shall | B．should | C．can | D．must |
8.
With a lot of work ______, she weren't allowed to leave her office.
| A．do | B．done . | C．to be done | D．to do |
9.
US house prices has risen by 12.4% over the 12 months to the end of July, completely ______his plan to buy another apartment.
| A．ruined | B．ruining | C．to ruin | D．ruins |
10.
______you are always optimistic and self-confident, I can't wait to make friends with you.
| A．Though | B．Since | C．While | D．So |
11.
Hello, Tom. What a coincidence! I ______ about you. And here you are.
| A．was just thinking | B．just thought | C．have just thought | D．would just think |
12.
Diligence is ______ it takes for the post-90's generation to win competitions.
| A．what | B．where | C．which | D．when |
13.
The School Art Festival has set up a stage ______students can show their talents.
| A．which | B．where | C．that | D．when |
试卷分析
-
【1】题量占比
选择题:(4道)
单项选择:(10道)
-
【2】：难度分析
1星难题：0
2星难题：0
3星难题：0
4星难题：0
5星难题：0
6星难题：10
7星难题：0
8星难题：0
9星难题：0