Tham khảo tài liệu 'cracking the toefl ibt 2009 edition part 27', ngoại ngữ, toefl - ielts - toeic phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 11. For a sentence insertion question remember to make sure the ideas in the new sentence match up with the sentences surrounding it. Let s look at the first square. So far spammers have been unable to defeat proof systems but most E-mail users are reluctant to adopt these systems because they make sending E-mails inconvenient. Although a fee to send an E-mail seems an extreme solution the fee is more of a verification device than an actual payment. A similar problem prevents another effective spam blocker from widespread use. This doesn t seem to match very well. The first sentence doesn t mention a fee which is part of the inserted sentence. And the second sentence seems to be introducing a new system which doesn t match up with the idea of a verification device found in the boldfaced sentence. Let s try the next square. A similar problem prevents another effective spam blocker from widespread use. Although a fee to send an E-mail seems an extreme solution the fee is more of a verification device than an actual payment. This system involves charging a minimal fee for each E-mail sent. Again this doesn t seem to be a good match. Ihe first sentence doesn t mention a fee at all. The second sentence does but it is introducing the system. Now let s try the third square. This system involves charging a minimal fee for each E-mail sent. Although a fee to send an E-mail seems an extreme solution the fee is more of a verification device than an actual payment. The fee. set at one penny would appear as an electronic check included with the E-mail. This almost works. The first sentence does talk about a fee and it matches with the beginning of the added sentence. But the second part of the new sentence about the verification device doesn t connect to the next sentence which still talks about the fee. Thus the final square must be the answer. Let s look at it. The fee set at one penny would appear as an electronic check included with the E-mail. Although a fee to send an .
