8.However,intheUnitedStates,thereisanadditionalreasonforfads:mostAmericansseemtofeelthatsomethingiswrongifthereisn’tfrequentchangeintheirlives.

【单选题】We’ll have to finish the job, _____. A. long it takes however B. it takes however long C. however long it takes D. long however it takes A. Long it takes however B. it takes however long C. however long it takes D. long however it takes

__________, he always goes to swim in winter. A: However it is cold B: It is cold however C: However cold is it D: However cold it is

中国大学MOOC: However, this kind of energy will (7) ________ plenty of greenhouse gases, such as carbon dioxide, methane, (8) ________ vapor and so on.

I’ll have to finish the job, . A: long it takes however B: it takes however long C: long however it takes D: however long it takes

________, we won’t lose heart. A: No matter the difficulty may be B: However the difficulty may be C: However great the difficulty may be D: However may be the difficulty

However,resultsfromseveralsmallstudiesinhumanshaveyieldedinconclusiveevidenceofabeneficial_____ofascorbicacidonleadtoxicity.

Earthquakesoccurwithoutwarning;however,i...ghlysensitiveorgans.

6.Inmanydevelopingnations,however,cigare...andisevenencouraged.

However,attimesthisbalanceinnatureis______,resultinginanumberofpossiblyunforeseeneffects.