Unlike other annelids, echiurans ( ).
A: have an open circulatory system
B: do not possess setae
C: undergo radial cleavage
D: are not segmented
E: have enterocoelous coelom formation
A: have an open circulatory system
B: do not possess setae
C: undergo radial cleavage
D: are not segmented
E: have enterocoelous coelom formation
D
举一反三
- Privacy is the right ________ themselves in your personal affairs, providing your affairs do not harm anyone else. A: not to have other people involving B: to not have other people involving C: to have not other people to involve D: not to have other people involved
- We are very sad to have to do this, but there is no other ______.
- Do you have no other clothes except those?（ ）
- Do you have any licenses of other special qualifications?
- If you have , you have the ability to decide what to do next and to do it, without needing other people to tell you what to do.
内容
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Tokens of her childhood await her.So we, with open arms. A: will B: do C: are D: have
- 1
The planes have to undergo _____ safety checks.
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---Have you been to the new night club in town?---Rarely___________the chance to go out, let alone to the night club. A: I do have B: have do I C: do I have D: do have I E: I have
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One of the first things you would have to do is open a checking accant.
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Were I to do it, I _____it some other way. A.would do B.will do C.would have done D.were to do