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绝大多数的碳酸盐岩都与生物直接或间接有关，很多都由生物或生物碎屑组成。

A. 对
B. 错

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Directions: In this section, there is a passage with ten blanks. You are requiredto select one word for each blank from a list of choices given in a word bankfollowing the passage. Read the passage through carefully before making yourchoices. Each choice in the bank is identified by a letter. Fill in each blank with aletter. You may not use any of the words in the bank more than once.It seems you always forget your reading glasses when you are rushing to work, yourcoat when you are going to the cleaners, your credit card when you are shopping ...Such absent-mindedness may be1___to you; now British and German scientistsare developing memory glasses that record everything the2_ sees.The glasses can play back memories later to help the wearer remember things theyhave forgotten such as where they left their keys. And the glasses also3_ the user to"label" items so that information can be used later on. The wearer could walk around an office or a factory identifying certain 4_by pointing at them. Objects indicated arethen given a(n) 5_ label on a screen inside the glasses that the user then fills in.It could be used in 6_ plants by mechanics looking to identify machine parts orby electricians wiring a(n) 7_ device.A spokesman for the project said: “A car mechanic for 8_could find at a glancewhere a part on a certain car model is so that it can be identified and repaired. For themotorist the system could 9_ accident black spots or dangers on the road.”In other cases, the glasses could be worn by people going on a guided tour,10___ points of interest or by people looking at panoramas where all the sites could beidentified.请将以下单词所对应的字母填入横线上（注意：只填字母）A) allowB) instanceC) blankD) industrialE) frustratingF) itemsG) indicatingH) highlightI) userJ) complicatedK) whiteL) annoyingM) successfulN) articlesO) simple

Use the words of vocabulary in P.66.It'll only be a () visit because we recently haven't much time.

As pace of life quickens things () to change fast in the city.

The earth's atmosphere makes () observation of distant stars difficult.