问题
单项选择题
In the morning Bernard was pale and his hand trembled too much even to lift his coffee cup, ______ butter his toast.
A．as well as
B．rather than
C．or else
D．let alone
答案
参考答案：D
解析：根据句意前后两个动作之间是递进关系，因此选let alone“更不用说……”。as well as也，又；rather than宁可，宁愿，倒不如；or else否则，要不然。