tính tỉ khối của khí NH3 so với H2

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14.16. The university has a great range of sporting ______________, including a 50-meter swimming pool. (1 Điểm) A. anniversary B. exhibition C. facilities D. manual E. nuclear F. railroads G. relieved H. sandals I. system J. tolerant 15.17. People in Italy are more ______________ of children in public area than in Britain. (1 Điểm) A. anniversary B. exhibition C. facilities D. manual E. nuclear F. railroads G. relieved H. sandals I. system J. tolerant 16.18. The road ______________ in Ha Noi was very simple in the 1990s, but is has dramatically changed over the last 20 years. (1 Điểm) A. anniversary B. exhibition C. facilities D. manual E. nuclear F. railroads G. relieved H. sandals I. system J. tolerant 17.19. They are planning a dinner to celebrate the 50th ______________ of the founding of the company. (1 Điểm) A. anniversary B. exhibition C. facilities D. manual E. nuclear F. railroads G. relieved H. sandals I. system J. tolerant 18.20. Bricklaying, plumbing and carpentry are example of ______________ labour. (1 Điểm) A. anniversary B. exhibition C. facilities D. manual E. nuclear F. railroads G. relieved H. sandals I. system J. tolerant 19.21. During the war, the students had to wear rubber ______________ and straw hats. (1 Điểm) A. anniversary B. exhibition C. facilities D. manual E. nuclear F. railroads G. relieved H. sandals I. system J. tolerant 20.22. The photographs will be on ______________ until the end of the month. (1 Điểm) A. anniversary B. exhibition C. facilities D. manual E. nuclear F. railroads G. relieved H. sandals I. system J. tolerant 21.23. We were ______________ to see Tom reach the other side of the river safely. (1 Điểm) A. anniversary B. exhibition C. facilities D. manual E. nuclear F. railroads G. relieved H. sandals I. system J. tolerant 22.24. The ______________ family can enjoy their meals in just minutes instead of hours. (1 Điểm) A. anniversary B. exhibition C. facilities D. manual E. nuclear F. railroads G. relieved H. sandals I. system J. tolerant 23.25. We see the freight ______________ make good profits while rendering excellent service. Trình đọc Chân thực (1 Điểm) A. anniversary B. exhibition C. facilities D. manual E. nuclear F. railroads G. relieved H. sandals I. system J. tolerant