单选题When the writer says "and that was my hope at this point"(Paragraph 1) "my hope" may be used to mean that ______.

单选题______ your opinions are worth considering, the committee finds it unwise to place too much importance on them. A. As B. Since C. Provided D. While

单选题The rabbit had no natural enemies in Australia ______.

单选题In divorce cases, the welfare of the children must be our primary concern.

单选题Peter may ______ with this, but I don"t really care.

单选题Which of the following features is not exhibited by the deductive method?

单选题Packaging is designed so as to encourage impetuous shopping.

单选题W: Has the latest Time Magazine arrived yet? Today's already Tuesday.M:______

单选题______ springs not out of true and deep admiration, but more often out of a self-seeking wish to identify with someone important or famous. A. A compliment B. Pal adulatory C. Flattery D. Praise

单选题The ______ has left for the Antarctic and it will come back in six months.

单选题____ arriving home she found her old friend already there.

单选题Which of the following will help create a bright outlook for cable?

单选题 The witness was ______ by the judge for failing to answer the question.

单选题Because the painter Albert Pinkham Ryder was obsessed with his ______perfection, he was rarely ______a painting, creating endless variations of a scene on one canvas, one on top of another.

单选题Recent studies have identified four major global environmental risks; acid rain, ozone depletion, deforestation and the greenhouse effect.

单选题The forecast predicted ______ weathers with snow, sunshine, wind and thunder and that is just what we have had. A. variable B. various C. differing D. fluctuating

单选题Even plants can run a fever, especially when they're under attack by insects or disease. But unlike humans, plants can have their temperature taken from 3,000 feet away--straight up. A decade ago, adapting the infrared scanning technology developed for military purposes and other satellites, physicist Stephen Paley came up with a quick way to take the temperature of crops to determine which ones are under stress. The goal was to let farmers precisely target pesticide (杀虫剂) spraying rather than rain poison on a whole field, which invariably includes plants that don't have pest (害虫) problems. Even better, Paley's Remote Scanning Services Company could detect crop problems before they became visible to the eye. Mounted on a plane flown at 3,000 feet at night, an infrared scanner measured the heat emitted by crops. The data were transformed into a color-coded map showing where plants were running "fevers". Farmers could then spot-spray, using 40 to 70 percent less pesticide than they otherwise would. The bad news is that Paley's company closed down in 1984, after only three years. Farmers resisted the new technology and long-term backers were hard to find. But with the renewed concern about pesticides on produce, and refinements in infrared scanning, Paley hopes to get back into operation. Agriculture experts have no doubt the technology works. "This technique can be used on 75 percent of agricultural land in the United States, "says George Oerther of Texas A&M. Ray Jackson, who recently retired from the Department of Agriculture, thinks? remote infrared crop scanning could be adopted by the end of the decade. But only if Paley finds the financial backing which he failed to obtain 10 years ago.

单选题选出下面读音不同的选项。

单选题When I saw these old photos, I couldn't help______ what had happened ten years before.