阅读下面的短文，文中有15处空白，每处空白给出了4个选项，请根据短文的内容从4个选项中选择1个最佳答案。
7 S7 R% W7 N$ E6 q% ~1 B Solar Storm ( Y- D* Y7 F6 Z
At the end of October 2003, a sudden solar storm hit the earth. A solar storm refers to the large amounts of charged particles released into space_______(1) the solar energy increases. The release of the energy_______(2) place along with the activity of the sunspots with a cycle of: 11 years. This time, the_______(3) of the storm exceeded expectations.
9 r; A+ T, l. L4 i This_______(4) of intense solar storm was caused by the eruption of a solar flare (闪光) and the ejection (喷发) of the solar corona (日冠) on October 28, 2003. Large amounts of charged particles moved 150,000,000 kilometers through space toward the_______(5) in 19 hours. They could affect aircraft roaming (漫游) in space.
2 [( }: F) R% z4 U/ E1 ? The high-energy particles will_______(6) some of the parts of an aircraft. They may also cause it to fail. High-energy particles can threaten the safety of an aircraft at a high orbit. If an aircraft orbits at a lower orbit, it is_______(7) because it is under the protection of the earth’s magnetic field. 8 F* L: V* _9 N. d5 q; g
A solar storm not only affects aircraft but also is a _______(8) to the environment and humans. The aerosphere and magnetic field of the earth can_______(9) humans from ultraviolet radiation and X-rays. While most of the X-rays are absorbed after they enter the aerosphere (大气层), still a few can_______(10) the ground.
- b5 @4 [# i1 @7 ?% m1 ?. e: V The geomagnetic storm caused by this round of solar storm reaches its highest level on the two_______(11) of the earth, which affects electricity supply of North America. Overexposure to_______(12) threatens the health of passengers on planes flying over the Polar Regions. If we fly in the sky during such a solar storm, it_______(13) we receive ten times the X-ray radiation. It’s really damaging. - j7 U: k" ]: S& w7 \
Scientists say a solar eruption is like the sun sneezing, which will make the earth_______(14) a cold. Though this natural force is irresistible, scientists can still_______(15) its movement accurately by monitoring. Facing successive solar storms, humans can’t drop their guard
: \6 b: l2 X( y1 Y/ s! b 1 A since B when C until D though
& C9 k) X6 \! c$ M: e3 q N& A! G 2 A finds B adjusts C holds D takes www.Examw.com. P2 A1 K2 Y# N
3 A intensity B height C width D density
" W" r# t Q$ F' }- a 4 A piece B part C round D set ; L% X8 g3 ]# b8 [5 k6 w
5 A star B earth C moon D sun , K' L2 ?3 p! M
6 A dominate B develop C damage D descend % _6 `( O- T6 E/ I
7 A safe B dangerous C comfortable D manageable % Z' D0 a: \. I. y0 |6 b+ j
8 A limit B cause C force D threat
- E: j6 K$ _- {; q7 d" d2 Q4 L% T 9 A separate B benefit C distinguish D protect 2 Q v/ U' A2 E) `1 h3 E0 z
10 A lose B reach C break D prepare , E: C( N7 y5 Q8 q+ i- [8 w
11 A poles B mountains C rivers D lakes
" Y7 Y% Q/ U. W) P# K! m$ J 12 A light B storm C radiation D pressure
% } i3 ]6 q$ c 13 A recommends B means C proposes D advises
: z2 F+ o8 G( A& j 14 A turn B stop C become D catch $ j9 D' c b- @' s: T5 z
15 A detect B start C experience D change
5 l" @& c) c% e4 \ 【参考答案】 1.B 2. D 3. A 4. C 5. B 6. C 7. A 8. D 9. D 10. B 11. A 12. C 13. B 14. D 15. A |
发表于 2012-8-16 00:07:50
