此题为判断题(对,错)。
A、I must decline HAFTA's invitation to speak at its fall conference.
B、HAFTA members must be looking forward to your annual fall conference to be held in Phoenix this year.
C、Because you requested only the benefits of juice bars, as a registered nurse I am not the speaker you need; perhaps you should contact a juice-bar salesperson.
D、I am delighted to receive your invitation to speak about health benefits of juice bars at HAFTA's fall conference!
A、activates the pepsinogen
B、kills bacteria
C、inhibits the secretions of bile and pancreatic juice
D、promote the absorption of the ferrous ion and calcium
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