A.A financial burden.B.A good companion.C.A real nuisance.D.A well-trained pet.
A.A financial burden.
B.A good companion.
C.A real nuisance.
D.A well-trained pet.
A.A financial burden.
B.A good companion.
C.A real nuisance.
D.A well-trained pet.
A、Different biomembranes may contain different proportions of the same phospholipids.
B、The two leaflets of a biomembrane may contain different phospholipids.
C、Some biomembranes have free edges.
D、Some phospholipids and cholesterol may cluster to form lipid rafts.
A.harness
B.hatch
C.motivate
D.gear
A.It has a very long history.
B.It is a private institution.
C.It was founded by Thomas Jefferson.
D.It stresses the comprehensive study of nature.
A.regiment
B.reign
C.regime
D.rehearsal
A.Y
B.N
C.NG
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