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n a rock sample because certain assemblages of species are characteristic of specific geologic time periods.98. be clogged withbe crowded withThe roads are clogged with the traffic between the suburbs and the cities every morning and evening.99. be ing into its own正在立國(guó)時(shí)期At a time when Canada was ing into its own, they felt that a major factor因素 in the development of a strong and healthy nation was a vital有生氣的 and relevant實(shí)質(zhì)性的 art.100. be concerned withLangston Hughes, a prolific writer of the 1920’s, was concerned with the depicting the experience of urban Black people in the United States. 6 。在地下道中引起了交通阻塞.75. be … shortW: I found the perfect book bag, but I am about 20 dollars short (缺20元).76. be absolved in sth沉浸I spent the whole weekend totally absolved in this biography.77. be accessible to sbEasily approached or enteredThe national park is accessible to everyone.78. be accountable to sb負(fù)責(zé)Powerful railroad barons (大王) made fortunes without having to be accountable to the public or considerate (關(guān)心) of customers.79. be accustomed toTo familiarize, as by constant practice, use, or habitI have accustomed myself to working long hours.80. be adapted toBloodhounds are biologically adapted to trailing their prey.81. be adept atbe good atCrows are adept at avoiding researchers.82. be allergic to sthHaving a dislike。托福100條必備習(xí)語(yǔ)1. a beach personM: Jennifer is going to the shore again this weekend.W: Well, she’s always been a beach person.a person who likes to go to the beach2. a bunch ofA bunch of us are getting together to go to the basketball game on Saturday afternoon.a group of3. abound inNew Jercy abounds in colonial architecture, battlefields of the revolution, and other historical sites important in the early history.be rich in4. adhere toWe will adhere to our plan.carry out a plan or an operation without deviation:5. a host ofA host of terms came into use.a group of6. a household wordPearl S. Buck was almost a household word throughout much of her lifetime.A widely known saying, name, person, or thing7. a large amount of a large quantity ofUsing many symbols makes it possible to put a large amount of information on a sing