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阅读理解。 I live in a very over populated beach area in the Los Angeles, and I love the beautiful scenery! But because of many people, lots of things are easy to be out of order, and sometimes it’s also easy to lose your cool . Today was a day I wish I did not get out of bed. I mean that if I did not have to wake up and deal with all the things that I deal with on a daily basis, it would have been wonderful. I had a cup of coffee this morning and that was my meal for breakfast, not healthy I know. Anyway, my stomach was sounding like a truck. So, I jumped in my car and decided to buy some food. I was in line at Taco Bell (一家墨西哥速食店) and the line was like a long snake! Finally I got to place my order, but a young girl in nice clothes pulled in and was stuck in such a way that unless I moved for her, she wouldn’t be able to get out. So I backed up and waved her into my place in the front of the line. To my surprise, this young girl did not say thanks. I was cool with it because I thought that I had done something nice for a change. After the girl received her food and pulled away, I pulled into the ordering spot, not mad, but hungry, and the employee said, “Hi, that girl just paid for your food.” That food was the most satisfying nourishment (营养品) my body had ever taken! If just by chance you are that person who bought my food, I should say “Thank you!” 1. The underlined part in the first paragraph probably means “_____”. A. be friendly to others B. become angry C. get warmer D. remain calm 2. What happened to the author according to the passage? A. He remained lying in bed all the morning. B. He didn’t feel well after drinking a cup of coffee. C. He made room for a girl who jumped the queue. D. He had a quarrel with a girl who didn’t stand in line. 3. How did the young girl show her thanks to the author? A. She got out of her car and said thanks. B. She drove away with her own food. C. She received her food and waved goodbye. D. She paid for the author’s food without him knowing. 4. The best title for the passage might be _____. A. Kindness is spreading B. Being patient wins respect C. Being calm is important in accidents D. Being polite can change the world
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举一反三
【单选题】______ children believe they can succeed, they will never become totally confident.
A.
If
B.
Since
C.
Once
D.
Unless
【单选题】如图是一种可充电的锂离子电池充、放电的工作示意图。该电池的反应式为:LiMnO 2 + C 6 Li 1 -x MnO 2 + Li x C 6 (Li x C 6 表示锂原子嵌入石墨形成的复合材料)下列有关说法正确的是
A.
K与N相接时,A极为负极,该电极反应式为:Li x C 6 - xeˉ= C 6 + xLi +
B.
在整个充电或放电过程中都只存在一种形式的能量转化
C.
K与N相接时,Li + 由A极区迁移到B极区
D.
K与M相接时,A极发生氧化反应,LiMnO 2 -xeˉ = Li 1 -x MnO 2 + xLi +
【简答题】新民主主义革命的基本经验
【单选题】___ children believe they can succeed, they will never become totally independent.
A.
Unless
B.
Though
C.
When
D.
If
【单选题】胃癌最主要的转移途径是
A.
经门静脉转移
B.
淋巴道转移
C.
经椎静脉转移
D.
腹腔种植转移
E.
消化道内转移
【单选题】胃癌最主要的转移途径是
A.
直接蔓延
B.
血道转移
C.
淋巴道转移
D.
种植转移
E.
肝转移
【单选题】胃癌最主要的转移途径是
A.
直接浸润
B.
腹膜种植转移
C.
淋巴转移
D.
血行转移
E.
远处转移
【单选题】不是光学谐振腔,主要作用的选项是?
A.
使受激辐射光放大过程能在有限体积的激活介质中持续进行。
B.
对输出激光束的方法给予限定。
C.
选平和调整激光的输出模式。
D.
使光的颜色改变。
【单选题】磷酸铁锂电池在充放电过程中表现出了良好的循环稳定性,具有较长的循环寿命,放电时的反应为: Li x C 6 + Li 1 - x FePO 4 =6C + LiFePO 4 。某磷酸铁锂电池的切面如下图所示。下列说法错误的是
A.
放电时 Li + 脱离石墨,经电解质嵌入正极
B.
隔膜在反应过程中只允许 Li + 通过
C.
充电时电池正极上发生的反应为: LiFePO 4 - xe - = Li 1 - x FePO 4 + xLi +
D.
充电时电子从电源经铝箔流入正极材料
【多选题】以下关于激光器的说法正确的是? Which of the following statements about lasers are correct?
A.
激光器所发出的激光波长本质上取决于受激物质的带隙,谐振腔只起到选频的作用。 Laser wavelength is essentially determined by the band gap of the stimulated material, and the resonator only plays the role of frequency selection.
B.
双异质结条形激光器的限制层折射率小于有源层。 The refractive index of the limiting layer of the double heterojunction strip laser is less than that of the active layer.
C.
双异质结条形激光器的前后晶体解理面构成了谐振腔,可以对有源层产生的受激辐射光进行选频率放大。 The crystal cleavage surfaces of double heterojunction strip lasers form a resonator, which can selectively amplify the stimulated radiation produced by the active layer.
D.
双异质结条形激光器的限制层构成了谐振腔,可以对有源层产生的受激辐射光进行选频率放大。 The restriction layer of the double heterojunction strip laser constitutes a resonator, which can selectively amplify the stimulated radiation produced by the active layer.
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