更多"Polar explorers have to be extremel"的相关试题:
[单项选择]______, explorers could never have found the cave.
A. But for the fissure had been spotted
B. If not the fissure had been spotted
C. Had the fissure not been spotted
D. Had not the fissure been spotted
[单项选择]The polar explorers took every precaution to ________the dangers of their trip.
A. optimize
B. standardize
C. energize
D. minimize
[单项选择]
For centuries, explorers have risked their lives venturing into the unknown for reasons that were to varying degrees economic and nationalistic. Columbus went west to look for better trade routes to the Orient and to promote the greater glory of Spain. Lewis and Clark journeyed into the American wilderness to find out what the U.S. had acquired when it purchased Louisiana, and the Appolo astronauts rocketed to the moon in a dramatic show of technological muscle during the cold war.
Although their missions blended commercial and political-military imperatives, the explorers involved all accomplished some significant science by going where no scientists had gone before.
Today Mars looms (隐约出的) as humanity’s next great terra incognita (未控明之地). And with doubtful prospects for a short-term financial return, with the cold war a rapidly fading memory and amid a growing emphasis on international cooperation in large space ventures, it is clear that imperatives other
A. to display their country's military might
B. to accomplish some significant science
C. to find new areas for colonization
D. to pursue commercial and state interests
[单项选择]What must the explorers be, even though they have modern equipment and technique
A. Brave and tough.
B. Stubborn and arrogant.
C. Well-liked and humorous.
D. Stout and smart.
[单项选择]They usually have less money at the end of the month than ________ at the beginning.
A. which
B. which was
C. they have
D. it is
[单项选择]We have many holidays from the end of March till the beginning of April. They are the best days for ______.
A. blade
B. coincidence
C. balcony
D. entertainment
[单项选择]They usually have less money at the end of the project than ______ at the beginning.
A. which
B. which was
C. they have
D. it is
[单项选择]These explorers received liberal rewards for the risks they had taken and felt proud.
[单项选择]There could have been a war over it but in the end reason ______.
A. prevailed
B. counted
C. induced
D. survived
[单项选择]All the off-shore oil explorers were in high spirits as they read ____________ letters from their families.
A. sentimental
B. affectionate
C. intimate
D. sensitive
[单项选择]All the off - shore oil explorers were in high spirits as they read ______ letters from their families.
A. sentimental
B. affectionate
C. intimate
D. sensitive
