[单选题]There are many navigational aids_________.
A. in chief engineer's room
B. in chief officer's room
C. on the bridge
D. on deck

[单选题]navigational aids
A. 助航设备
B. 深度指示器
C. 火警指示器
D. 操舵指示器

[单选题]There are some navigational instruments______.
A. on the bridge
B. on the deck
C. in the radio room
D. on the hold

[单选题]I ______ major damage to navigational instruments.
A. has
B. had
C. have
D. have to

[单选题]Duty officer and ______ keep navigational watches on the bridge at sea.
A. captain
B. chief engineer
C. duty sailor
D. duty engineer

[单选题]Many Native Americans were killed during the ______ of the American West by Europeans in the 19th century.
A.shelter
B.construction
C.settlement
D.basement

[单选题]Many oil companies are now making alternative energy___________ in an effort to remain competitive in future energy markets.
A.payments
B.contributions
C.donations
D.investments

[单选题]Many people who read the document complained that it included too much information that was not __________ to the main issue.
A.relevant
B.outward
C.equivalent
D.opposite

[单选题]How many kinds of mobile technology is mentioned in the passage?()
A.5
B.4
C.3

[单选题]Nowadays, many companies still use formal memo writing.（）
A.是
B.否

[单选题]The airline industry also relies on many management, professional, and administrative support workers to keep operations running _______.
A.smooth

B.smoothly

C.smoothness

D.smoothish

[单选题]Many people believe the glare from snow causes snow-blindness. Yet, dark glasses or not, they find themselves suffering from headaches and watering eyes, and even snow-blindness, when exposed to several hours of "snow light". The United States Army has now determined that glare from snow does not cause snow- blindness in troops in a snow-covered country. Rather, a man's eyes frequently find nothing to focus on in a broad expanse of barren snow-covered terrain. So his gaze continually shifts and jumps back and forth over the entire landscape in search of something to look at. Finding nothing, hour after hour, the eyes never stop searching and the eyeballs become sore and the eye muscles ache. Nature offsets this irritation by producing more and fluid which covers the eyeball. The fluid covers the eyeball in increasing quantity until vision blurs,then is observed, and the result is total, even though temporary, snow-blindness. Experiments led the Army to a simple method of overcoming this problem. Scouts ahead of a main body of troops are trained to shake snow from evergreen bushes, creating a dotted line as they cross completely snow-covered landscape. Even the scouts themselves throw lightweight, dark colored objects ahead on which they too can focus. The men following can then see something. Their gaze is arrested. Their eyes focus on a bush and having found something to see, stop scouring the snow-blanketed landscape. By focusing their attention on one object at a time, the men can cross the snow without becoming hopelessly snow-blind or lost. In this way the problem of crossing a solid white terrain is overcome. A suitable title for this passage would be_________.
A.snow-blindness and how to overcome it
B.nature's cure for snow blindness
C.soldiers in the snow
D.snow vision

[单选题]Many species are in peril of extinction because of our destruction of their natural ____.
A.habitat
B.favor
C.hoop
D.circle

[单选题]He has made many studies on youth unemployment and education and the neglect of______marginalized.
A.a
B.this
C.the
D.that

[单选题]Many of those that are prosecuted and sentenced and end____in a jail are subsequently freed or simply walk out the door as there are prisons in Congo that simply do not have doors.
A.down
B.off
C.up
D.beyond

[单选题]Many disasters allow no time for people to gather even the most basic necessities, which is__________ planning ahead is essential.
A.why
B.because
C.since