7.Because osteoporosis ('骨質(zhì)疏松) often causes no symptoms at all until a fall snaps a bone,the only way to tell if you have it is through a bone mineral thickness test. This procedure is advised for anyone over 50who has suffered a broken bone and all women over 65.Right now,the test involves lying on your back while the arm of a special X-ray device moves over your body to measure the thickness of various bones.
CyberLogic,a New York R&D firm,has developed a simpler device that's nine inches high,runs on four AA batteries and scans bones with ultrasound (超聲波).If the portable machine proves as reliable as X-rays,it could be a breakthrough,says New York osteoporosis expert Dr.Ethel Siris."A small device like this could make bone checkups part of a routine office visit,because it's both affordable and user-friendly."If testing shows that you have osteoporosis,some major advances in treatment can help.While there are several effective medications on the market,including Fosamax,Actonel,Evista,Miacalcin and Forteo,the latest wonder drug is Boniva,me first once-a-month pill for osteoporosis.The FDA recently approved this drug,which works by reducing activity in cells responsible for bone breakdown.
Should osteoporosis get severe enough to collapse a vertebra (脊髓),doctors have a new way to make repairs:Two tiny balloons are inserted into the bone through surgical tubes.The balloons are expanded to push the bone back into its normal position,then bone cement is used to keep it from collapsing again.

59.What does the underlined word"This"in Paragraph 1refer to?B
A.A fall snaps a bone.
B.A bone mineral thickness test.
C.Osteoporosis often causes no sign.
D.The only way to tell if you have osteoporosis.
60.What can we infer from the passage?A
A.Women are more likely to get osteoporosis.
B.Men are are more likely to get osteoporosis.
C.Anyone over 50is likely to get osteoporosis.
D.Men and women share equal chances to get osteoporosis.
61.Which of the following is true about the portable scanner?C
A.It's a breakthrough.                   B.It's as reliable as X-rays.
C.It's easy to carry along.              D.It's a routine office visit.

分析 本文是一篇科普類文章,主要講述了骨質(zhì)疏松癥完全沒有癥狀,能告訴你是否患有骨質(zhì)疏松癥的唯一方法是通過一個骨質(zhì)厚度測試,建議50歲以上的人曾遭受骨折和所有超過65的女性都進行一下該測試.本文以此展開談論,介紹了檢測骨質(zhì)的方法.

解答 59.答案:B.詞義猜測題.根據(jù)"Because osteoporosis ('骨質(zhì)疏松) often causes no symptoms at all until a fall snaps a bone,the only way to tell if you have it is through a bone mineral thickness test"可知,this應該指代的是上面提到的a bone mineral thickness test.故選B.
60.答案:A.推理判斷題.由文章第一段第二句話"This procedure is advised for anyone over 50who has suffered a broken bone and all women over 65"可知,作者建議50歲以上有過骨折的人和所有65歲以上的婦女去做骨質(zhì)疏松的測試,由此可推知,婦女更容易得骨質(zhì)疏松.故選A.
61.答案:C.推理判斷題.由第二段的前三句"CyberLogic,a New York R&D firm,has developed a simpler device that's nine inches high,runs on four AA batteries and scans bones with ultrasound (超聲波).If the portable machine proves as reliable as X-rays,it could be a breakthrough"可知,A、B、D三項都有是假設,故只有C項是正確的.

點評 本文是一篇科普類閱讀,題目涉及詞義猜測題,推理判斷題,做題時應結(jié)合文章上下文內(nèi)容,仔細閱讀原文并根據(jù)所給選項的含義進行分析,從而得出正確答案.切記胡亂猜測,一定要做到有理有據(jù).

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