更多“Communities are part of everyday life and have positive()on its members.A. affectsB. ”相关问题
  • 第1题:

    Given the following DDL for the PARTS table:CREATE TABLE parts (part_no INT(9) NOT NULL, part_name VARCHAR(24), part_remain INT(9));All part numbers entered will be different and all rows should be displayed in order of increasing part numbers whenever the table is queried. Which of the following create index statements will meet this criteria and require the least amount of storage for the index object?()

    A.CREATE UNIQUE INDEX idx_partno ON parts(part_no)

    B.CREATE UNIQUE INDEX idx_partno ON parts(part_name ASC)

    C.CREATE UNIQUE INDEX idx_partno ON parts(part_name, part_no ASC)

    D.CREATE UNIQUE INDEX idx_partno ON parts(part_no, part_name ASC)


    参考答案:A

  • 第2题:

    1 从下列句子中选出一句最好的表达

    A.A.Every day, he labored from dawn to sundown, plowed his field, turned the soil, and tended to his pistachio (开心果) trees.#B.B.Every day, he plowed his field and turned the soil, tending to his pistachio trees and laboring from dawn to sundown.#C.C.Every day, he labored from dawn to sundown, plowing his field, turning the soil and tending to his pistachio trees.#D.D.Every day, laboring from dawn to sundown, plowing his fi
    Learning to write complex sentences is the best way to improve your writing style.;The tall, good-looking boy with the curly blond hair laughed uproariously at his best friend’s suggestion.;The green alligator eats quickly in the pool at 9:00 A.M. because he is hungry.

  • 第3题:

    真核生物ITS序列由ITS1和ITS2两部分组成。


    编码序列

  • 第4题:

    PART Ⅰ: INCOMPLETE SENTENCES
    Directions: This part of the test has incomplete sentences. Four words or phrases, marked (A), (B), (C), (D), are given beneath each sentence. You are to choose the one word or phrase that best completes the sentence. Then, on your answer sheet, find the number of the question and mark your answer.
    1. It is on October 1,2009 that the People's Republic of China ______ its 60th birthday.

    A. congratulated
    B. kept
    C. remained
    D. celebrated

    答案:D
    解析:
    这句话的意思是:2009年10月1日,中华人民共和国(人民)庆祝祖国建立60周年。congratulate表示"向某人祝 贺";keep表示"保持,遵守";remain表示"逗留,继续存在";celebrate表示"庆祝,庆贺,赞美,歌颂"。故D项符合题意。

  • 第5题:

    1、从下列句子中选出一句最好的表达

    A.Every day, he labored from dawn to sundown, plowed his field, turned the soil, and tended to his pistachio (开心果) trees.#B.Every day, he plowed his field and turned the soil, tending to his pistachio trees and laboring from dawn to sundown.#C.Every day, he labored from dawn to sundown, plowing his field, turning the soil and tending to his pistachio trees.#D.Every day, laboring from dawn to sundown, plowing his field, and
    Learning to write complex sentences is the best way to improve your writing style.;The tall, good-looking boy with the curly blond hair laughed uproariously at his best friend’s suggestion.;The green alligator eats quickly in the pool at 9:00 A.M. because he is hungry.

  • 第6题:

    从下列句子中选出一句最好的表达

    A.Every day, he labored from dawn to sundown, plowed his field, turned the soil, and tended to his pistachio (开心果) trees.#B.Every day, he plowed his field and turned the soil, tending to his pistachio trees and laboring from dawn to sundown.#C.Every day, he labored from dawn to sundown, plowing his field, turning the soil and tending to his pistachio trees.#D.Every day, laboring from dawn to sundown, plowing his field, and
    Each person has a unique way of saying, hearing, touching, tasting and thinking.