Vocabulary 41. He was ______ almost speechless by the news that his friendly neighbor was a wanted man.A. restrained B. rendered C. reassured D. reinforced2. If one is ______ honest and productive work or contribution to others’ happiness, he is hardly happy himself.A. incapable of B. ignorant of C. relative to D. absorbed in3. ______ the lack of cooperation between the two sides, the project has made little progress so far.A. According to B. Owing to C. In terms of D. As to4. With the aid of friendly Maoris, rough ______ were erected for the people and their belongings.A. guards B. guides C. shields D. shelters5. ______ the matter of this infectious disease, I would like to add a few remarks to those of the previous speaker.A. As regards to B. As regard of C. As regarding D. As regards6. With the rapid development of distance learning, people can enjoy an equally convenient ______ to educational resources, no matter where they are.A. access B. assess C. approach D. attachment7. The President said that the Government wants to see "a free media which can reflect the realities of society, ______ people, and search for solutions for unresolved problems".A. comment B. enlighten C. defy D. dictate8. Global changes in educational thought have produced such a new form of education as “______ universities”.A. peculiar B. virtuous C. virtual D. liberal9. It has been absolutely clear party policy that we are not ______ higher taxes because they will bring people heavier burden.A. in favor of B. in the hope of C. in terms of D. in the course of10. I couldn’t ______ cigarettes even though my doctor had repeatedly warned me not to smoke.A. persist B. resist C. insist D. consist11. In many cultures, the shape of the human skull is a ______ that represents death.A. superiority B. symbol C. sympathy D. symptom12. Our party will be held next Saturday. We’ve started sending out ______.A. individualism B. inspections C. interference D. invitations13. My uncle has spent a ______ amount of money on that house --- much greater than he had expected.A. talented B. tender C. tremendous D. truthful14. She worried a lot about her husband’s health because she learned there was no ______ for his disease.A. crime B. crush C. cure D. curriculum15. Adults are often less flexible, so they need more time to adapt themselves to the new surroundings when they are ______ to another place.A. transferred B. transformed C. transmitted D. transplanted16. I could see at a ______ that he understood exactly what I meant.A. glance B. gaze C. stare D. glare17. She has no pity on those homeless people; how come she has ______ herself so much.A. affected B. developed C. hardened D. required18. Don’t ______ the little boy ______ the garden; he’ll pull up all the flowers.A. give ... loose for B. bring ... loose inC. make ... loose at D. let ... loose on19. Lack of money and lack of machinery are the two major ______ on the growth of this factory.A. restraints B. results C. ranks D. respects20. “I’ll come back soon, my dear.” His voice was soft, full of kindness and ______.A. reaction B. affection C. arrival D. attraction
对于一个封闭系统,下列说法中正确的有:( )。
A. 等容绝热过程ΔU = 0;
B. 等容过程所作的功等于零;
C. 绝热过程;ΔU=-∫pdv;
D. 循环过程ΔU = 0。
在373K和标准大气压下,水汽化为蒸汽,由于过程的温度和压力都恒定,所以( )
A. ΔU=0
B. ΔH=0
C. ΔH<0
D. ΔH>0
nullA、B两组分的气液平衡T-x图上,有一最低恒沸点,恒沸物组成为xA=0.7。现有一组成为xA=0.5的A、B液体混合物,将其精馏可得到( )
A. 纯A和恒沸混合物
B. 纯B和恒沸混合物
C. 只得恒沸混合物
D. 得纯A和纯B