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dakuandakuan

Some patients who do not respond to therapies for depression may simply have received inadequate treatment, having, for example, been prescribed a drug at a dosage too low to be effective or having been taken off a drug too soon.
Ahaving, for example, been prescribed a drug at a dosage too low to be effective or having been
Bhaving, for example, a drug prescription that was ineffective because the dosage was too low, or being
Cas, for example, having too low of a dosage of a prescribed drug for it to be effective, or being
Dwhen they have, for example, been prescribed too low a drug dosage to be effective, or were
Efor example, when they have a drug prescription with a dosage too low to be effective, or been


答案是　A  我选择的是 Ｅ　

Indigolove

Some patients who do not respond to therapies of depression may simply have received inadequate treatment, having, for example been prescribed a drug as a dosage too low to be effective or having been taken off a drug too soon.

A. having, for example been prescribed a drug as a dosage too low to be effective or having been
B. having, for example, a drug prescription that was ineffective because the dosage was too low, or being
C. as, for example, having too low of a dosage of prescribed drug for it to be effective, or being
D. when they have, for example, been prescribed too low a drug dosage for it to be effective, or were
E. for example, when they have a drug prescription with a dosage too low to be effective, or been

A: it is the right choice
B: having a drug prescription (refers to patients) can’t be parallel to being taken off (refers to a doctor, possibly) … as the subjects are different, the two are not parallel.
C: having too low of a dosage (refers to patients) can’t be parallel to being taken off (refers to a doctor, possibly) … as the subjects are different, the two words are not parallel.
D: is not parallel (have been is not parallel to were)
E: is not parallel (have a prescription is not parallel to been taken off)