更多"( ) it or not, his discovery has cr"的相关试题:
[单项选择]() it or not, his discovery has created a stir in scientific circles.
A. Believe
B. To believe
C. Believing
D. Believed
[单项选择]______ it or not, his discovery has created a stir in scientific circles.
A. Believe
B. Believed
C. To believe
D. Believing
[简答题]Believe it or not, his discovery has created a stir in scientific circles.
[填空题]__________ (信不信由你), his discovery has created a stir in scientific circles.
[单项选择]A. His plan is well accepted.
B. His has come across a lot of good plans.
C. He had problem articulate his nice ideas.
D. People don’t understand the level of pollution in the city.
[填空题]__________________(信不信由你), his discovery has created a stir in scientific circles.
[单项选择]FREEZING FOOD
The discovery of freezing has changed our eating habits more than any other related invention. Because many foods contain large amounts of water, they freeze solidly at or just below 32 degrees Fahrenheit. When we lower the temperature to well below the freezing point and prevent air from penetrating the food, we retard the natural process of decay that causes food to spoil. Freezing preserves the flavor and nutrients of food better than any other preservation method. When properly prepared and packed, foods and vegetables can be stored in the freezer for one year.
Most vegetables and some fruits need blanching before they are frozen, and to avoid this step would be an expensive mistake. The result would be a product largely devoid of vitamins and minerals. Proper blanching curtails the enzyme action, which vegetables require during their growth and ripening but which continues after maturation and will lead to decay unless it is almost entirely stopped by blanching
A. To suggest the storage temperature for most foods
B. To identify the freezing point of water
C. To state the correct setting for a freezer
D. To give the temperature for blanching
[单项选择]
Ever since its discovery, Pluto has never really fitted in. After the pale and glowing giant Neptune, it is little more than a cosmic dust mite, swept through the farthest reaches of the solar system on a planet wildly tilted relative to the rest of the planets. It is smaller than Neptune’s largest moon, and the arc of its orbit is so oval that it occasionally crosses its massive blue neighbor’s path.
For years, it has been seen as our solar system’s oddest planet. Yesterday, however, scientists released perhaps the most convincing evidence yet that Pluto, in fact, is not a planet at all. For the first time, astronomers have peered into a belt of rocks beyond Pluto unknown until 10 years ago—and found a world that rivals Pluto in size. The scientists posit that larger rocks must be out there, perhaps even larger than Pluto, meaning Pluto is more likely the king of this distant realm of space detritus than the tiniest of the nine planets.
Wh
A. Rocks larger than Pluto have been found in the Kuiper Belt.
B. The Kuiper Belt did not exist when Pluto was first discovered.
C. The astronomers are divided with regard to the status of Pluto.
D. There is almost no difference between Pluto and other Kuiper Belt objects.
[单项选择]An accidental discovery has brought seismologists (地震学家) one step closer to being able to predict earthquakes. As part of an unrelated effort to measure underground changes caused by shifts in barometric pressure (大气压力), a team of researchers found that increases in subterranean pressure (地 下压力)preceded earthquakes along California’s San Andreas Fault (断层) by as much as 10 hours. If follow-up tests advance the findings, seismologists may eventually be able to provide a few hours’ notice for people to find safe places prior to quakes.
Researchers used a high-tech equivalent of a stereo speaker lowered into a bore hole near Parkfield, Calif., a half-mile deep and five yards from a measuring device. For two months beginning in late 2005, researchers transmitted pulse signals three times per second, from the speaker to the measuring device, calculating travel time between the two stations. Surprised scientists learned the seismic waves slowed dramatically on only two occasions:two hou
A. provides more accurate data than the new one
B. costs less than the new one
C. can he improved vastly
D. warns people only a few seconds before the earthquake