结构推理His telescope and his experiments were always bringing him new surprises, and he made notes of his work every day.

结构推理写出以下缩略语的完整形式和中文意思：DOS

结构推理Meeting in progress，quiet please．

结构推理Both of them have an uncommon ability to deal with difficult people.

结构推理写出以下单词的中文意思：assignment n.

结构推理共同的利益

结构推理世界卫生组织(WHO)正在敦促成员国采取有效措施阻止禽流感的蔓延。

结构推理Point out what type of basic pattern each of the following sentences belongs to.(指出下列各句分别属于何种句型) 例：He became a dentist dentist.[SVC]

结构推理cancellation of contract/to cancel the contract

结构推理How long does a jacket like this last me? — ______(这要看你多长时间一次).

结构推理 Questions 1 to 5 are based on the following passage. Did you know that our first 5-cent coin was not a nickel and our first "nickel" was not a 5-cent coin? The coin we now call the "nickel" originated (起源) as a silver half dime（角币）in 1792, the beginning of its 79 year life as a silver 5-cent coin. Our first nickel coins were not 5-cent pieces at all. Nickel first appeared in United States coinage（造币）with the introduction of the small size 1-cent pieces in 1856. Its composition was mostly copper (铜) and less than 1/6 nickel. The nickel caused the coin to be much lighter in color than the older copper coins. For that reason, it was sometimes called a white cent. Another common name was a "nick" --- short for nickel --- referring to its nickel content. This composition was continued in the cent into 1864. The first "nickel" 5-cent piece to be struck was the Shield Type starting in 1866. The composition of the coin was three-quarters copper and one quarter nickel, the same as today's nickels. That means the metal that gives the coin its name is only 25/% of its content! The Shield type was replaced by the Liberty Head or "V" Nickel in 1883 and the Indian Head, more commonly called the "Buffalo" Nickel in 1913. Our current "Nickel," was introduced in 1938, the result of a public competition among some 390 artists. (236 words) 1. What was the first American 5-cent coin made of? 2. When did nickel appear in the United States? 3. Why was the nickel called "white cent"? 4. How much nickel did the first "nickel" have? 5. How was the current "Nickel" was introduced?

结构推理The greater capacity of the depth filter usually enable them to be longer before being clogged.

结构推理two or several items of commission

结构推理许多人认为这种药有助于睡眠，而我只能暗自感叹：“要是他们知情就好了。”(all can think, if...only)

结构推理有效期限

结构推理By now I can count the blows again. The only pain I feel is in the lips I have been biting.

结构推理根据给出的中文意思，写出单词：adv.潜在地

结构推理For the time being, they have no choice but to use the old technology, but they will soon turn to new technologies.

结构推理如果确实在经济上有困难，你可以申请学生贷款。(to apply for)

结构推理根据给出的短语，写出中文意思：a list of