1.选择题- (共6题)
阅读表达,阅读下面短文，根据短文后的要求答题。
The Clean Your Plate Campaign was set up by nongovernmental organizations, which urged people to save food by not wasting anything on the dining table and finish all the food on the plate. The campaign, launched on weibo, was soon joined by millions of netizens across China in order to control food wastage.
A study show that the grain that people waste every year in China is about 50 million tons , enough to feed about 200 million people for one year.
Nearly 750 restaurants in Beijing have joined the Clean Your Plate campaign against wasting food by offering smaller dishes, half dishes and assorting dishes to reduce waste, and encourage customers to take leftovers home.
Now (1) (share) the empty dishes after dinner is popular with many youngers, and they are proud of it.
⑵ Our government is trying its best to put an end to food wastage, and is taking the lead to save food.
阅读表达,阅读下面短文，根据短文后的要求答题。
The Clean Your Plate Campaign was set up by nongovernmental organizations, which urged people to save food by not wasting anything on the dining table and finish all the food on the plate. The campaign, launched on weibo, was soon joined by millions of netizens across China in order to control food wastage.
A study show that the grain that people waste every year in China is about 50 million tons , enough to feed about 200 million people for one year.
Nearly 750 restaurants in Beijing have joined the Clean Your Plate campaign against wasting food by offering smaller dishes, half dishes and assorting dishes to reduce waste, and encourage customers to take leftovers home.
Now (1) (share) the empty dishes after dinner is popular with many youngers, and they are proud of it.
⑵ Our government is trying its best to put an end to food wastage, and is taking the lead to save food.
2.单选题- (共8题)
A. 1：2 B. 2：1 C.
D. 1：1
| A．质子在D形盒中做匀速圆周运动的周期为2T |
B．质子被加速后的最大速度可能超过 |
| C．质子被加速后的最大速度与加速电场的电压大小无关 |
| D．不改变B和T，该回旋加速器也能用于加速α粒子（质量数为4，核电荷数为2） |
| A．经过Ⅰ时，a→d→c→b→a |
| B．经过Ⅱ时，a→b→c→d→a |
| C．经过Ⅱ时，无感应电流 |
| D．经过Ⅲ时，a→b→c→d→a |
、
完全相同，带铁芯的线圈L的电阻可忽略，则( )
| A．S闭合瞬间，、同时发光，接着熄灭，更亮，最后熄灭 |
| B．S闭合瞬间，不亮，立即亮 |
| C．S闭合瞬间，、都不立即亮 |
| D．稳定后再断开S的瞬间， 熄灭，比(原先亮度)更亮 |
| A．磁铁在下落过程中机械能守恒 |
| B．磁铁的机械能增加 |
| C．磁铁的机械能有时增加有时减少 |
| D．线圈增加的内能是由磁铁减少的机械能转化而来的 |
| A．P损=U2/R | B．P损=U′2/R | C．（U2-U′2）/R | D．P损＝P2R/U2 |
3.多选题- (共4题)
| A．向右飞行的正离子束 | B．向左飞行的正离子束 |
| C．向右飞行的负离子束 | D．向左飞行的负离子束 |
| A．磁铁做匀速直线运动 | B．磁铁做减速运动 |
| C．小车向右做加速运动 | D．小车先加速后减速 |
| A．作用于金属棒上的各力的合力所做的功等于零 |
| B．作用于金属棒上的各力的合力所做的功等于mgh与电阻R上发出的焦耳热之和 |
| C．恒力F与安培力的合力所做的功等于零 |
| D．恒力F与重力的合力所做的功等于电阻R上发出的焦耳热 |
、R
、R
和R
均为固定电阻，开关S是闭合的。
和
为理想交流电压表，读数分别为U和U；
、
和
为理想交流电流表，读数分别为I、I和I。现断开S，U数值不变，下列推断中正确的是( ) 
| A．U变小、I变小 | B．U不变、I变大 |
| C．I变小、I变小 | D．I变大、I变大 |
4.填空题- (共1题)
（1）ab杆沿轨道下滑到速度为v时（图甲），E=_______，____端电势高．（图中α、B、L均为已知）
（2）ab杆绕a端以角速度ω匀速转动时（图乙），E=_______，____端电势高．（图中B、L均为已知）
5.解答题- (共3题)
（1）0~0.2内线圈中磁通量的变化率;
（2）0~0.2s内线圈中产生的热量.
⑴从此位置开始计时，它的感应电动势的瞬时值表达式。
⑵1min内R上消耗的电能。
⑶当从该位置转过60°时，通过R上瞬时电功率是多少？
⑷线圈由如图位置转过30°的过程中，R的电量为多少？
6.实验题- (共1题)
-
【1】题量占比
选择题:(6道)
单选题:(8道)
多选题:(4道)
填空题:(1道)
解答题:(3道)
实验题:(1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：5
7星难题：0
8星难题：11
9星难题：1