今日習題（外貿(mào)英語——單項選擇）：
    Choose the best answer for each of the following question
    1. Contracts must be renewed one week _______ their expiration.
    A on 　
    B against 　
    C the moment of 　
    D before
    2. We are arranging for n inspection tour of _________ the material was processed.
    A place　
    B the place 　
    C where 　
    D there
    3. Information indicates that some similar goods of Indian origin have been sold here _______ about 30% lower than yours.
    A with a level 　
    B at something　
    C at quotation　
    D with a figure
    4. We give you on the attached sheet full details regarding packing and marking, which must be strictly ________.
    A observed　
    B abide by 　
    C.submitted 　
    D seen
    5. The importance of delivery on time ______ overstressed, because failure to receive goods or services will cause serious inconvenience to the end-users.
    A can　
    B be 　
    C cannot be 　
    D could be
    正確答案：1.D 　　2.C　　3.B 　　4.A 　　5.C