语法与词汇The Greenwich Village had long enjoyed a dubious reputation for Bohemianism and eccentricity.

语法与词汇Although Britain's film makers often produce

语法与词汇Passage BThe preservation of embryos and juveniles is rare occurrence in the fossil record. The tiny, delicate skeletons are usually scattered by scavengers or destroyed by weathering before they can be fossilized. Ichthyosaurs had a higher chance of being preserved than did terrestrial creatures because, as marine animals, they tended to live in environments less subject to erosion Still, their fossilization required a suite of factors: a slow rate of decay of soft tissues, little scavenging by other animals, a lack if swift currents and waves to jumble and carry away small bones, and fairly rapid burial. Given these factors, some areas have become a treasury of well-preserved ichthyosaur fossils.The deposits at Holzmaden, Germany, present an interesting case for analysis. The ichthyosaur remains are found in black, bituminous marine shales deposited about 190 million years ago. Over the years, thousands of specimens of marine reptiles, fish, and invertebrates have been recovered from these rocks. The quality of preservation is outstanding, but what is even more impressive is the number of ichthyosaur fossils containing preserved embryos. Ichthyosaurs with embryos have been reported from 6 different levels of the shale in a small area around Holzmaden, suggesting that a specific site was used by large numbers of ichthyosaurs repeatedly over time. The embryos are quite advanced in their physical development; their paddles, for example, are already well formed. One specimen is even preserved in the birth canal. In addition, the shale contains the remains of many newborns that are between 20 and 30 inches long.Why are there so many pregnant females and young at Holzmaden when they are so rare elsewhere? The quality of preservation is almost unmatched, and quarry operations factors do not account for the interesting question of how there came to be such a concentration of pregnant ichthyosaurs in a particular place very close to their time of giving birth.

语法与词汇The excess of imports over exports will _____ national economy.

语法与词汇The new secretary has written a remarkably _____ report only in a few pages but with all the details.

语法与词汇He went bankrupt and thus a millionaire was _____ to a beggar.

语法与词汇She even had the______to lecture Loretta on how

语法与词汇In order to keep the line moving, customers with

语法与词汇The following are all correct responses to "Who

语法与词汇In 2002, in an _____ move in the European Union, Germany ______ some rights to animals in its constitution.

语法与词汇Experts say that on a hot and humid day we can lose up to four litres of fluid through sweating and _____.

语法与词汇Their refusal to sign the international treaty

语法与词汇Although local governments in Britain are now

语法与词汇The police caught the thief on the street

语法与词汇Supermarkets promise to provide all we need in a low-price, one-stop shop, but they sell mediocre food, kill town centers and _____ our souls.

语法与词汇The famous scientist _____ his success to hard work.

语法与词汇An energy tax would curb ordinary air pollution, limit oil imports and cut the budget _____.

语法与词汇My sister is quite _____ and plans to get an M. A.degree within one year.

语法与词汇She managed to save______she could out of her

语法与词汇During the construction of skyscrapers, cranes are used to _____ building materials to the upper floors.