问答题Known for their hunting skill, the heron feeds on fish, frogs, and crustaceans that it grabs with its spear-like beak.　　　　A　　　 B　　　　　　　　　　　　　　　　C　　　　　　　　　　　　　　　　　　　　　　DNo error　　E

The small village has become (wide) ____ known in recent years for its silk exports.

Since 1960, the fast-growing town of Hotstone, Arizona, has drawn water from the Gray River, which feeds Lake Mudfish. If the town’s water use continues to grow at its present rate, in about 20 years the water level of Lake Mudfish will inevitably decrease to the point that it can no longer support its biologically fragile population of fish.　 The prediction above is based on which of the following assumptions?

Please help yourself to the fish.（）

According to the passage, music is mysterious (line 16) because ______.

If 5 frogs catch 5 flies in 5 minutes, how many frogs are required to catch 50 flies in 50 minutes?

The lack of progress in international relations reveals that governments must study the art of diplomacy much closer.　　　　　　　　　　　　　　　　　　　A　　　　　　　　　　　　　　　　　　　　　　B　　　　　　　C　　　　　　　　DNo error　　E

Adelaide,the capital of South Australia,is internationally known for its（）

Since 2001, the company has spent more on A employee training than they did in the previous 10 years combined.　　　　　　　　　　　　　　　　A　　　　 B　　　　　　　　　　　　　　　　C　　　　　　　　　　　　　　　　 DNo error　　E

Chronometer error may be found by（）.

There is one passage in this section with 5 statements. Go over the passage quickly and answer the questions on the Answer Sheet.　　For questions 1-5, mark　　Y (for YES)　　　　　　if the statement agrees with the information given in the passage;　　N (for NO)　　　　　　if the statement contradicts the information given in the passage;　　NG (for NOT GIVEN)　　if the information is not given in the passage.　　When was the last time you saw a frog? Chances are, if you live in a city, you have not seen one for some time. Even in wet areas once teeming with frogs and toads, it is becoming less and less easy to find those slimy, hopping and sometimes poisonous members of the animal kingdom. All over the world, even in remote jungles on the far side of the globe, frogs are losing the ecological battle for survival, and biologists are at a loss to explain their demise. Are amphibians simply over-sensitive to changes in the ecosystem? Could their rapid decline in numbers be signalling some coming environmental disaster for us all?　　This frightening scenario is in part the consequence of a dramatic increase over the last quarter of a century in the development of once natural areas of wet marshland: home not only to frogs but to all manner of wildlife. Yet, there are no obvious reasons why certain frog species are disappearing from rainforests in the Southern Hemisphere which are barely touched by human hands. The mystery is unsettling to say the least, for it is known that amphibian species are extremely sensitive to environmental variations in temperature and moisture levels. The danger is that planet Earth might not only lose a vital link in the ecological food chain (frogs keep populations of otherwise pestilent insects at manageable levels), but we might be increasing our output of air pollutants to levels that may have already become irreversible. Frogs could be inadvertently warning us of a catastrophe.　　An example of a bizarre occurrence regarding a species of frog dates from the summer of 1995, when “an explosion” of multi-coloured frogs of the species Rana klepton esculenta occurred in the Netherlands. Normally these frogs are brown and greenish-brown, but some unknown contributory factor is turning these frogs yellow and / or orange. Nonetheless, so far, the unusual bi- and even tri-coloured frogs are functioning similarly to their normal-skinned contemporaries. It is thought that frogs with lighter coloured skins might be more likely to survive in an increasingly warm climate due to global warming.　　One theory put forward to explain extinct amphibian species that seems to fit the facts concerns the depletion of the ozone layer, a well-documented phenomenon which has led to a sharp increase in ultraviolet radiation levels. The ozone layer is meant to shield the Earth from UV rays, but increased radiation may be having a greater effect upon frog populations than previously believed. Another theory is that worldwide temperature increases are upsetting the breeding cycles of frogs.　　Statements:　　1．Biologists are unable to explain why frogs are dying out.　　2．Attempts are being made to halt the development of wet marshland.　　3．Frogs are important in the ecosystem because they control pests.　　4．It is not known why Dutch frogs are changing colour.　　5．It is a fact that frogs’ breeding cycle has been upset by worldwide increases in temperature.

The control rod of a steering gear pump is attached at its outer end to （）.

The high performance innovators depended on different models and approaches to outperform their competitors. In many cases, the company’s success is attributed to a distinctive skill. Google, for example, is known for generating new ideas with blistering speed. Toyota excels at developing its products and processes far more efficiency and effectively than most other companies. And Apple is noted for its well-honed capabilities in project selection and customer understanding. The most successful companies exhibited strong capabilities across four key areas: ideation, project selection, product development, and commercialization.

During steering gear test should be moved through its full travel in both directions（）

The goals of the scientists, whose training had afforded them extensive experience with cutting-edge methodologies,　　　　　　　　　　　　　　　　　　　　A　　　　　　　Bwere to change the genetic components of the virus and creating a new set of criteria for analyzing the results.　　　　　　　　　　　　　　　　　　　　　　　　　　　　　C　　　　　　　　　　　　　　　　　　　　 DNo error　　E

Most tree frogs change colors from time to time to fit in with its environment.

Because of its savory sauce and its elegant presentation, the chicken and broccoli at Kudeta received a better review　　　　　　　　　　　　　　　　　　A　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　Bin the Dining Guide than did Hunan Garden. No error　　　　　C　　　　　　　　　　　D　　　　 　　E

Why do some frogs change the pitch of its calls?