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。
$ `" F8 V. E" \8 O X4 m Solar Storm
& I# N' g" L) ?0 K% z. l 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.
. P4 W: ~, P! v, 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.
, I" u7 N A) _8 s$ B 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. 0 f1 j+ l3 W5 j9 ^3 i
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.
% T0 Y* }; D# F% U! ^ 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. " P w9 T4 a& L R3 ~7 v) L/ i H3 z
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 9 w; k* e2 K1 l8 J+ x+ o: j
1 A since B when C until D though , x6 W5 [' z9 g, ]3 U
2 A finds B adjusts C holds D takes www.Examw.com
: Q3 p9 c# p6 m( ]+ f 3 A intensity B height C width D density ) z5 R7 h$ c0 @7 ]5 X" u% u7 g
4 A piece B part C round D set
0 O2 s& r2 k/ R3 {3 | 5 A star B earth C moon D sun
( S, e5 h- G0 X0 S) l6 v; C 6 A dominate B develop C damage D descend
$ K' r1 u+ ?2 v, E; B1 y% Z 7 A safe B dangerous C comfortable D manageable
; G7 n3 O: m* c, `" j" v 8 A limit B cause C force D threat ) \5 a9 n$ N: L! e0 b9 a, Y
9 A separate B benefit C distinguish D protect
$ l! `6 Y. N& t3 s( Y, a 10 A lose B reach C break D prepare
, q8 A* u1 m3 u$ Y/ O7 M! S0 D8 b 11 A poles B mountains C rivers D lakes
9 L& i4 j# s8 L2 f. A 12 A light B storm C radiation D pressure 9 g3 |7 ^0 H7 q
13 A recommends B means C proposes D advises 8 U" u( G7 P/ [& N7 n5 o# p% h9 q
14 A turn B stop C become D catch
9 p. u! b6 S" ?/ s0 z6 h8 P7 O 15 A detect B start C experience D change
' I8 u# o! Z* I( r# _7 U+ e) _ 【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
