試題詳解

4. Red tides are dangerous because the:
(A) dinoflagellates cause them to produce a strong neurotoxin.
(B) euglenoids cause them to produce a toxin that causes severe flulike symptoms.
(C)green algae cause them to produce a severe allergic reaction in most people.
(D) diatoms cause them to produce severe gastric distress.
(E) red algae that cause them can disrupt shipping by clogging propellers.