未知题型
Yet, after wrapping a flexible cuff around your arm and pumping it up, your doctor frowns and gives you the bad news:you are one of the roughly 60 million Americans who have high blood pressure. Because it can lurk in the body without your knowing it, high blood pressure has been called the silent killler. (47) (48) Depending on how high your pressure is, how you live and what changes you're willing to make in your lifestyle, treatment can be tailored specifically to you. (49) The first, or top, number is the systolic reading, the pressure of blood against artery walls when the heart beats—the period of highest tension. The second, or bottom, number is the diastolic—the minimum pressure, between beats, when the heart is filling with blood and artery walls are relaxed. If the diastolic goes over 105 and stays there through several readings, that's the beginning of the danger zone, moderate hypertension, and continued monitoring is essential. Once the diastolic rises above 115, the condition is severe. A diastolic between 90 and 104 falls into the gray area of 'mild' hypertension. (50)
- A.
(46)
【参考答案】
C
C 解析：选项C所在段落的大意是“你没有症状，没有疼痛，没有生病的感觉。然而在医生把一条活动的袖带缠住你的手......
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未知题型
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未知题型
?Read the text below about supermarket checkouts.?In most of the lines 41—52 there s one extra word. It is either grammatically incorrect or does not fit in with the meaning of the text. Some lines, however, are correct.?If a line is correct, write CORRECT on your Answer Sheet.?If there is an extra word in the line, write the extra word in the line. write the extra word in CAPITAL LETTER on your Answer Sheet.CHECKOUTOPERATORSSupermarket Checkout operators sit at electronic tills and feed in the prices of the customer's goods This is now done by 'scanning', passing each such item over34. a device that reads the bar-code on it and automatically registers it down in the35. till. They may weigh some products, such as fruit, on scales near the36. tilt. When all the goods will have been scanned, the till provides a total and the37. operators take payment in the cash, by cheque or by credit or debit card. and38. give a till receipt and any more change required. They provide bags, often39. help to pack purchases, and change paper till rolls as being necessary.40. They also make it sure they have enough change, credit card forms, and carrier41. bags. Operators ring a bell or buzzer to summon for a supervisor to help42. with problems, and put notes and cheques into bags for periodic collection.43. They enter their personal details in the till, so that their performance can be44. analysed later. The system offers supermarkets an efficient way of handling with a45. large number of customers purchasing many products and helps to keep checkout queues to a minimum.(34)
A.
?In
B.
?If
C.
?If
D.
E.
40.
F.
43.
G.
(34)
