[填空题]Mintel have limited their investigation to professional and managerial groups.

[填空题]Mintel have limited their investigation to professional and managerial groups.

[判断题]Private limited companies have their membership limited to between two and fifty people.

[单项选择]News writers know their readers have limited time and usually give the ______ develop-ments of an event first.
[A] newest [B] latest [C] nearest [D] earliest

[单项选择]The words discussed so far have been limited to one type: those whose meaning identifies the members of a class. For example, the word chair is used correctly when it is applied to the class which includes objects as different as straight chairs, folding chairs and rocking chairs. The same skill in identifying instances of the same class is required for understanding some types of verbs. For example, all people walk differently, but native speakers of English use the word walk correctly when they realize that these minor differences are irrelevant. But not all words in a language involve the identification of classes. In fact, the mastery of a working vocabulary in any human language appeals to a wide range of intellectual skills, some easier and some more difficult than those required for grasping the meaning of common nouns and verbs. As an example of a relatively easy concept, consider what is required for understanding proper nouns: one must simply point out a single individual
A. has to learn to identify some features while ignoring others
B. first has to be able to use proper nouns
C. must be at least six years old
D. must play with toys

[单项选择]

It happens to every college student. Every professor on campus assigns a paper the same week. Volunteer work and social activities fill the calendar. Before long, an assignment is due in the morning, so what else is there to do Brew a pot of coffee and begin another of that most storied of college traditions: the all- nighter.
Many college students have found themselves in this position. Although studying late into the early hours is a pretty well-accepted part of college life, the scientific consensus is clear—insufficient sleep is bad for a student’s performance, happiness and health.
Sleep is one of the body’s most vital processes, affecting everything from muscle strength to memory span. Sleep increases blood flow to muscles and repairs damaged cells. A recent study indicates that college basketball players perform better on the court if they sleep at least ten hours the night before. Sleep consolidates memories and prepares the brain
A. rare
B. commonplace
C. negligible
D. justified

[单项选择]They only have a limited amount of time to get their points across.
A. large
B. total
C. small
D. similar

[单项选择]While those earning master’s, doctoral, or professional degrees still earn more during their careers than those with less education, the gap is closing, according to The College Payoff, a report published today by the Georgetown University Center for Education and the Workforce."It’s still true that, on average, it’s better to get the higher degree; it’s better to keep climbing—but it’s less and less true," says the center’s director, Anthony Carnevale.
Those holding bachelor’s degrees earn about ＄2.27 million over their lifetime, while those with master’s, doctoral, and professional degrees earn ＄2.67 million, ＄3.25 million, and ＄3.65 million,, respectively. That said, the major and industry a student selects ultimately have an enormous impact on lifetime earnings. Those with bachelor’s degrees who work either in management or science, technology, engineering, and mathematics (STEM) earn more, on average, than people with advanced degrees of any level who work in fields like educ
A. Why there are such great gaps of earnings.
B. In what fields and industries you can earn most.
C. How women and minorities are discriminated.
D. How higher education affects lifetime salary.

[单项选择]______have a very limited offensive punch.
A. Libyan government forces
B. Rebel forces
C. NATO
D. The United States

[单项选择]
Driverless ears
Professor Sebastian Thrun, director of the Stanford Artificial Intelligence Laboratory, wants to cut the number of ears on planet earth by 50%.
He said: "It’s a huge waste of money and resources to do so—we use ears about 3% of the time. "
Professor Thrun is a leader in the field of driverless Cars and has built two robotic vehiclescalled Stanley and Junior.
The cars have no human driver and no remote control system—everything from sensors to navigation is handled by an onboard computer.
They were both entered into the DARPA Grand Challenge—a race for autonomous vehicles. Stanley won in 2004 and Junior took second place in 2007.
But the ultimate goal is to create a world where self - aware vehicles can drive passengers around without hitting pedestrians or bumping into other vehicles.
"To be able to understand the environment as deep as humans do is the holy grail
A. It is easy for pilots to do the stunts when operating helicopters in the air.
B. It is easy for helicopters to descend into a narrow canyon to do rescue work.
C. It is difficult to design software which enables a helicopter to do stunts.
D. There is no such software that enables a helicopter to do stunts.