单选题EXHORT: SUGGEST : :

单选题 Over the years there have been countless fans of the classic Hanna-BarberaLine cartoon character Yogi Bear. The cartoon series enjoyed by young and old alike revolved mostly around the misadventures of this loveable bear and his sidekick Boo-Boo as they attempted to snag "pic-a-nic" baskets in the made-up(5) land of Jellystone Park. It's not often that people think about where the ideas for these cartoon characters came from, which brings up an interesting point: Do bears actually search for food left in picnic baskets and unattended campsites? Anyone who has watched an episode of the classic cartoon can see that the bears' behavior goes far beyond the limits of what is natural. The thing that must be(10) explored, then, is which of those humorous antics were imagined by the writers at Hanna-Barbera, and which were actually based on a bear's normal behaviors. Remarkably enough, bears have been known to seek out food from some unlikely sources, including picnic baskets, to supplement their usual diet of berries, insects, and fish. Bears work throughout the summer and fall to build up fat stores(15) to have energy enough to last them through their winter hibernations. Related to this is their need to replenish their depleted reserves when they wake up in the spring. Food is generally scarce in the early spring and consequently the bears will gladly indulge in any foods that are high in proteins or fats. This is the main reason for any incidents involving bears after they enter campsites in search of food.(20) Although this behavior may seem strange, it is merely the result of nature equipping the bears with a variety of traits that allow them to remain well fed in increasingly human-populated habitats. Specifically, the American black bear, Ursus americanus, has color vision, which most other animals lack. Black bears have been observed by scientists using this unique enhancement to distinguish(25) between varying food items at close range. On top of this, bears have an acute sense of smell and can use their especially sensitive lips to locate food. These sensory talents contribute to the bears' remarkably high intelligence and curiosity, giving them the ability to open closed containers if they believe food is inside. Their exploratory and navigational skills are also worthy of note—most bears will(30) maintain vast territories to be sure they can obtain food from a variety of sources. Bears may even vary their sleep cycles in areas where there is a large degree of human activity, either feasting on road-side garbage during the day or scouring campsites for leftovers at night.

单选题Running a marathon is an ______ task, taking months of both physical and mental preparation and training before actually running a grueling 26.2 miles.(A) arduous(B) ambiguous(C) involuntary(D) eloquent(E) overt

单选题PREOCCUPATION:

单选题AGITATION:

单选题When the average of a list of course grades is multiplied by the number of courses, the result is n. What does n represent?

单选题VILIFY : MALIGN ::

单选题In 1950 Roberto was four times as old as Juan. In 1955 Roberto was three times as old as Juan. How old was Roberto when Juan was born?(A) 5(B)10(C) 20(D) 30(E) 40

单选题Antonyms

单选题There is another kind of spiritual sacrifice as well, quieter and less celebrated, but just as remarkable: that of making each day, in its most______aspects-cooking, eating, breathing—______the absolute.

单选题 The polar lights known as auroras are produced when charged subatomicLine particles, such as protons and electrons flowing from the sun through Earth's magnetosphere, collide with atoms and molecules in Earth's upper atmosphere. For reasons not entirely understood, magnetic storms, called substorms,(5) occasionally occur where the flow of particles greatly increases and the interplanetary magnetic field becomes much stronger. These substorms are frequently visible on the Earth because they increase the intensity of the polar lights. Recently, five identical probes were blasted into orbit in a $200 million US project known as the THEMIS mission. Scientists hope the probes will be able to(10) investigate a number of mysteries about the nature of the substorm instabilities, including when and where substorms begin, how the individual components of the substorm interact, and how substorms power the auroras. The mission's secondary objectives involve understanding and predicting variations in the flux of electrons in Earth's outer radiation belt. These electrons pose a hazard to the(15) safety of both astronauts and spacecraft. Understanding substorm instabilities would thus improve success rates of future space missions.

单选题Iftheperimeteroftherectangleaboveis36，thenl=A.9B.14C.16D.28E.32

单选题Although spinach is rich in calcium, it also contains large amounts of oxalic acid, a substance that greatly impedes calcium absorption by the body

单选题The passage presents information that would answer which of the following questions?(A) In what ways do the coastlines of Africa and South America differ from one another?(B) How much lighter than the substratum of igneous rock below them are the continental masses?(C) Is the rotation of the globe affecting the stability of the present-day continental masses?(D) According to Wegener's theory, in what direction have the Americas tended to move?(E) How does Wegener's theory account for the apparent immobility of the African continent?

单选题Evan has 4 times as many books as David and 5 times as many as Jason. If Jason has more than 40 books, what is the least number of books that Evan could have? A. 200 B. 205 C. 210 D. 220 E. 240

单选题EPHEMERAL : ENDURE::(A) hollow : inundate(B) immanent: transcend(C) pointed : prick(D) raucous : polish(E) dingy : glisten

单选题MEDICINE : DOSE ::

单选题ARTICULATE : SPEECH ::(A) classified : detail(B) attractive : satisfaction(C) elegant : deportment(D) amenable : mind(E) servile : admiration

单选题Threecarpetpiecesintheshapesofasquare,atriangle,andasemicircleareattachedtooneanother,asshowninthefigureabove,tocoverthefloorofaroom.Iftheareaofthesquareis144feetandtheperimeterofthetriangleis28feet,whatistheperimeteroftheroom'sfloor,infeet?A.32+12πB.40+6πC.34+12πD.52+6πE.52+12π