GRE Text Completion: ETS Official Practice 150-GRE OP150:填空 - 50Y3FZ2OU1271EU5O

In The Simple Soybean, the author is much less restrained in his enthusiasm for the bean's medical efficacy than he is in his technical writings, but he still cautions against treating soy as a ____________. A. staple B. supplement C. herald D. panacea E. cure-all F. harbinger