6. They conducted a series of experiments that their purpose (achieved) 20.(Para. 9)address: V 1)make a formal speech to a large group of people The governor was invited to address the conference. 2 if you address an envelope, package, etc, you write on it the name and address of the person you are sending it to The letter is addressed to the occupier of the house. (插入声音文件) (He gave in to curiosity and opened the letter addressed to his wife 3)(formal)if you address a problem, you start trying to solve it We must address ourselves to the problem of drugs among young people It is time we addressed ourselves to the main item on the agenda 21.(Para. 9)criticize: V. express your disapproval of sb. or sth, or to talk about their faults He was criticized by the committee for failing to report the accident. Ron does nothing but criticize and complain all the time. Pattern: criticize sb. sth. (for doing sth NB.注意该词的词性变化,它的名词与形容词分别为: criticism和 critical。 22. (Para. 10)channel: V 1)send water through a passage The river had channeled its way through the soft rock. 2 control or direct people or things to a particular place, work, situation etc Ne must channel all our energies into the new scheme. Drugs from government pharmacies were being channeled into illegal drug markets 23.(Para. 10) tackle:V 1)try to deal with a difficult problem We should be together to tackle all the challenges Police have launched an initiative to tackle rising crime.9 6. They conducted a series of experiments that their purpose. (=achieved) 20. (Para. 9) address: v. 1) make a formal speech to a large group of people The governor was invited to address the conference. 2) if you address an envelope, package, etc., you write on it the name and address of the person you are sending it to The letter is addressed to the occupier of the house. （插入声音文件） (=He gave in to curiosity and opened the letter addressed to his wife.) 3) (formal) if you address a problem, you start trying to solve it We must address ourselves to the problem of drugs among young people. It is time we addressed ourselves to the main item on the agenda. 21. (Para. 9) criticize: v. express your disapproval of sb. or sth., or to talk about their faults He was criticized by the committee for failing to report the accident. Ron does nothing but criticize and complain all the time. Pattern: criticize sb. / sth. (for doing sth.) N.B. 注意该词的词性变化，它的名词与形容词分别为：criticism 和 critical。 22. (Para. 10) channel: v. 1) send water through a passage The river had channeled its way through the soft rock. 2) control or direct people or things to a particular place, work, situation, etc We must channel all our energies into the new scheme. Drugs from government pharmacies were being channeled into illegal drug markets. 23. (Para. 10) tackle: v. 1) try to deal with a difficult problem We should be together to tackle all the challenges. Police have launched an initiative to tackle rising crime