单选题 In the morning Bernard was pale and his hand trembled too much even to lift his coffee cup, ______ butter his toast.

【正确答案】 D

【答案解析】[解析] D选项let alone(更不用说……)符合题意。A选项as well as(也，又)、B选项rather than(宁可，宁愿，倒不如)、C选项or else(否则，要不然)都不正确。本题空格处是说更不用说给他的吐司面包涂黄油了。因此D选项为正确答案。