试题及答案考试资料

Generally speaking, a British is widely regarded as a quiet, shy and conservative person who is ___1___ only among those with whom he is acquainted. When a stranger is at present, he often seems nervo...

Most worthwhile careers require some kind of specialized training. Ideally, therefore, the choice of an __1__ should be made even before choice of a curriculum in high school. Actually, __2_-_, most p...

The horse and carriage is thing of the past. But love and marriage are still with us and still closely interrelated. Most American marriages, particularly first marriages 1young couples are the result...

As Gilbert White, Darwin, and others observed long ago, all species appear to have the innate capacity to increase their numbers from generation to generation. The task for ecologists is to untangle t...

Students of United States history, seeking to identify the circumstances that encouraged the emergence of feminist movements, have thoroughly investigated the mid-nineteenth-century American economic ...

Until about five years ago, the very idea that peptide hormones might be made anywhere in the brain besides the hypothalamus was astounding. Peptide hormones, scientists thought, were made by endocrin...

Flatfish, such as the flounder, are among the few vertebrates that lack approximate bilateral symmetry (symmetry in which structures to the left and right of the body’smidline are mirror images). Most...

Traditionally, the study of history has had fixed boundaries and focal points — periods, countries, dramatic events, and great leaders. It also has had clear and firm notions of scholarly procedure: h...

The use of heat pumps has been held back largely by skepticism about advertisers’ claims that heat pumps can provide as many as two units of thermal energy for each unit of electrical energy used, thu...

One of the silliest things in our recent history was the use of “Victorian” as a term of contempt or abuse. It had been made fashionable by Lytton Strachey with his clever, superficial and ultimately ...