A. Only two.
B. Because of a heavy fog.
C. 7:30 pm.
D. The great favorite of mine.
E. No problem.
F. Two hours ago.
G. Enjoy yourself.
H. No. Thank you just the same.
A. Only two.
B. Because of a heavy fog.
C. 7:30 pm.
D. The great favorite of mine.
E. No problem.
F. Two hours ago.
G. Enjoy yourself.
H. No. Thank you just the same.
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{{U}} (64) {{/U}} plants to make the food which we {{U}} (65)
{{/U}} . Heat, {{U}} (66) {{/U}}, makes our environments tolerable
and some ultraviolet rays (紫外线) penetrate the {{U}} (67) {{/U}}. Cosmic
(宇宙的) rays of various kinds come {{U}} (68) {{/U}} the air from outer
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screened off. As {{U}} (70) {{/U}} as men leave the atmosphere they are
{{U}} (71) {{/U}} to this radiation; {{U}} (72) {{/U}} their
spacesuits or the walls of their spacecraft, if they are inside, {{U}} (73)
{{/U}} prevent a lot of radiation damage. Rad A. from B. as C. than D. away 我来回答: 提交
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