【C7】A．securityB．stressC．injuriesD．expenses

The economic recession has meant that job ______ is a rare thing.A．securityB．safetyC．prote

【C10】A．costB．priceC．feeD．expense

The economic recession has meant that job ______ is a rare thing.[2006]A．securityB．safetyC

The feature that distinguishes "a greenhouse" and "a green house" is______.A．toneB．stressC

The degree of force used in producing a syllable is calledA．toneB．stressC．intonationD．sono

【C12】A．convenientB．worthwhileC．unfortunateD．expensive