1.brittle adj. 易碎的,脆弱的
    [舉一反三] 同
    breakable, fragile
    [雙語(yǔ)語(yǔ)境] Sometimes, the life of human being is as brittle as thin glass. 有的時(shí)候人的生命如玻璃一樣容易破碎.
    [串聯(lián)記憶](méi) The two boys quarreled so much that their friendship became rather brittle.
    A. elastic B.strong C. fragile D. sturdy
    2.bucket n.水桶,吊桶
    [舉一反三] 派
    bucketful n. 一桶,一滿(mǎn)桶
    [串聯(lián)記憶](méi) The two sisters went up the hill and fetched a bucket of water.
    A.cup B.basin C.pail D.bag
    3.bulk n.1.體積,容積||2.主體,大批,大量,大塊
    [雙語(yǔ)語(yǔ)境]It’s not their weight that makes these sacks hard to carry, it’s their bulk.這些袋子難以搬運(yùn),倒不是因?yàn)橹囟求w積大.|| The bulk of the work has already been done. 大部分工作已經(jīng)完成.
    4.bulletin n. 公報(bào),公告,告示
    [串聯(lián)記憶](méi)Here is the latest bulletin about the president’s health.
    A. conference B.report C film D.reel
    5.bureau n. 署,局,司,處
    [舉一反三] 同
    branch, department, office ,section,service
    [雙語(yǔ)語(yǔ)境]Federal Bureau of Investigation. 聯(lián)邦調(diào)查局
    [串聯(lián)記憶](méi)The weather_________ makes daily reports on weather conditions.
    A. apartment B.bureau C. bullet D. jail